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                  | Standard and/or project under the direct responsibility of ISO/TC 226 Secretariat | Stage | ICS | 
|---|---|---|
| 
                           Aluminium oxide primarily used for the production of aluminium — Preparation and storage of test samples 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of loss of mass at 300 degrees C (conventional moisture) 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Preparation of solution for analysis — Method by alkaline fusion 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of iron content — 1,10- Phenanthroline photometric method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of loss of mass at 1 000 degrees C and 1 200 degrees C 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of loss of mass at 300 degrees C and 1 000 degrees C 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of titanium content — Diantipyrylmethane photometric method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of absolute density — Pyknometer method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Measurement of the angle of repose 
                           | 
                        90.20 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of untamped density 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of silica content — Reduced molybdosilicate spectrophotometric method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of sodium content — Flame emission spectrophotometric method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of vanadium content — N-Benzoyl-N-phenylhydroxylamine photometric method 
                           | 
                        95.99 | |
| 
                           Cryolite, natural and artificial — Preparation and storage of test samples 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial — Determination of silica content — Reduced molybdosilicate spectrophotometric method 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial — Determination of fluorine content — Modified Willard-Winter method 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial — Determination of iron content — 1,10- Phenanthroline photometric method 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of calcium content — Flame atomic absorption method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of calcium content — Naphthalhydroxamic acid spectrophotometric method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of calcium content 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of zinc content — Flame atomic absorption method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of zinc content — PAN photometric method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Preparation of solution for analysis — Method by hydrochloric acid attack under pressure 
                           | 
                        95.99 | |
| 
                           Cryolite, natural and artificial — Determination of sodium content — Flame emission and atomic absorption spectrophotometric methods 
                           | 
                        90.93 | |
| 
                           Cryolite (natural and artificial) — Determination of aluminium content — 8- Hydroxyquinoline gravimetric method 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of fluorine content — Alizarin complexone and lanthanum chloride spectrophotometric method 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of phosphorus content — Reduced phosphomolybdate spectrophotometric method 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial — Determination of aluminium content — Atomic absorption method 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of boron content — Curcumin spectrophotometric method 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of boron content — Curcumin spectrophotometric method — Technical Corrigendum 1 
                           | 
                        60.60 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Particle size analysis — Sieving method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide used for the production of primary aluminium — Particle size analysis for the range 45 µm to 150 µm — Method using electroformed sieves 
                           | 
                        95.99 | |
| 
                           Aluminium oxide used for the production of primary aluminium — Particle size analysis for the range 45 µm to 150 µm — Method using electroformed sieves 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Sampling 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of an adsorption index 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of manganese content — Flame atomic absorption method 
                           | 
                        95.99 | |
| 
                           Cryolite, natural and artificial — Determination of calcium content — Flame atomic absorption method 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of water content — Electrometric method 
                           | 
                        95.99 | |
| 
                           Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of moisture content — Gravimetric method 
                           | 
                        90.20 | |
| 
                           Sodium fluoride primarily used for the production of aluminium — Determination of iron content — 1,10- Phenanthroline photometric method 
                           | 
                        90.93 | |
| 
                           Sodium fluoride primarily used for the production of aluminium — Determination of silica content — Reduced molybdosilicate spectrophotometric method 
                           | 
                        90.93 | |
| 
                           Sodium fluoride primarily used for the production of aluminium — Determination of soluble sulphates content — Turbidimetric method 
                           | 
                        90.93 | |
| 
                           Sodium fluoride primarily used for the production of aluminium — Determination of chlorides content — Turbidimetric method 
                           | 
                        90.93 | |
| 
                           Anhydrous hydrogen fluoride for industrial use — Determination of water content — Karl Fischer method 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial — Conventional test for evaluation of free fluorides content 
                           | 
                        95.99 | |
| 
                           Cryolite, natural and artificial — Conventional test for evaluation of free fluorides content 
                           | 
                        60.60 | |
| 
                           Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method 
                           | 
                        90.93 | |
| 
                           Cryolite primarily used for the production of aluminium — Determination of elements — Wavelength-dispersive X-ray fluorescence spectrometric method using pressed powder tablets 
                           | 
                        60.60 | |
| 
                           Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Reduced molybdophosphate photometric method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Calcined coke and calcined carbon products — Determination of total sulfur by the Eschka method 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphur content — X-ray fluorescence spectrometric method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of water content — Azeotropic distillation (Dean and Stark) method 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Part 1: Determination of softening point by the ring-and-ball method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Part 2: Determination of the softening point (Mettler softening point method) 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of softening point by the ring-and-ball method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Sampling 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Sampling 
                           | 
                        90.93 | |
| 
                           Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Coke for electrodes — Sampling 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of content of toluene-insoluble material 
                           | 
                        90.92 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of content of toluene-insoluble material 
                           | 
                        30.60 | 
                           | 
                      
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of contents of quinoline-insoluble material 
                           | 
                        90.92 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of contents of quinoline-insoluble material 
                           | 
                        30.60 | 
                           | 
                      
| 
                           Carbonaceous materials for the production of aluminium — Calcined coke — Determination of apparent oil content  — Heating method 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of coking value 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of coking value 
                           | 
                        90.92 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of coking value — Technical Corrigendum 1 
                           | 
                        60.60 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of coking value 
                           | 
                        30.60 | 
                           | 
                      
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of density — Pycnometric method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Measurement of dynamic viscosity 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Calcined coke and calcined carbon products — Determination of the density in xylene — Pyknometric method 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials used in the production of aluminium — Green and calcined coke — Determination of ash content 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Green and calcined coke — Determination of ash content 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Determination of ash 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials used in the production of aluminium — Sampling plans and sampling from individual units — Part 1: Cathode blocks 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Sampling plans and sampling from individual units — Part 2: Prebaked anodes 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Sampling plans and sampling from individual units — Part 3: Sidewall blocks 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Sampling from cathodic blocks and prebaked anodes — General 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of specific surface area by nitrogen adsorption — Single-point method 
                           | 
                        95.99 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of specific surface area by nitrogen adsorption 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of the fine particle size distribution (less than 60 mu/m) — Method using electroformed sieves 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for use in the production of aluminium — Green and calcined coke — Determination of trace elements by flame atomic absorption spectrometry 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Calcined coke — Determination of oil content — Method by solvent extraction 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of sulfur content by the bomb method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used for the production of aluminium — Cathode blocks and prebaked anodes — Determination of the density in xylene by a pyknometric method 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Green coke — Determination of volatile matter content by gravimetric analysis 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Green coke — Determination of volatile matter content by gravimetric analysis 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for use in the production of aluminium — Calcined coke — Determination of grain stability using a laboratory vibration mill 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Calcined coke for electrodes — Determination of the electrical resistivity of granules 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Calcined coke for electrodes — Determination of the electrical resistivity of granules 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Calcined coke for electrodes — Determination of the electrical resistivity of granules 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Green coke and calcined coke for electrodes — Determination of bulk density (tapped) 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for use in the production of aluminium — Calcined coke — Determination of residual-hydrogen content 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Determination of sulfur content by an instrumental method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Calcined coke — Determination of water content 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Prebaked anodes — Determination of the fracture energy 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cathode blocks and baked anodes — Determination of electrical resistivity at ambient temperature 
                           | 
                        90.92 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cathode blocks and baked anodes — Determination of the specific electrical resistivity at ambient temperature 
                           | 
                        60.00 | |
| 
                           Aluminium oxide primarily used for production of aluminium — Method for calculating the Al2O3 content of smelter-grade alumina 
                           | 
                        90.93 | |
| 
                           Aluminium fluoride for industrial use — Determination of trace elements — Wavelength dispersive X-ray fluorescence spectrometric method using pressed powder tablets 
                           | 
                        90.92 | |
| 
                           Aluminium fluoride for industrial use — Determination of trace elements — Wavelength dispersive X-ray fluorescence spectrometric method using pressed powder tablets 
                           | 
                        30.60 | 
                           | 
                      
| 
                           Carbonaceous materials for use in the production of aluminium — Pitch for electrodes — Determination of volatile matter content 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for use in the production of aluminium — Pitch for electrodes — Determination of C/H ratio in the quinoline-insoluble fraction 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Green coke and calcined coke for electrodes — Analysis using an X-ray fluorescence method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Calcined coke — Determination of the reactivity to carbon dioxide — Part 1: Loss in mass method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium —  Calcined coke — Determination of the reactivity to air — Part 1: Ignition temperature method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Calcined coke — Determination of particle size distribution 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Calcined coke — Determination of particle size distribution 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes and cathode blocks — Part 1: Determination of apparent density using a dimensions method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes and cathode blocks — Part 1: Determination of apparent density using a dimensions method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes and cathode blocks — Part 2: Determination of apparent density and of open porosity using a hydrostatic method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes and cathode blocks — Part 2: Determination of apparent density and of open porosity using a hydrostatic method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Prebaked anodes and cathode blocks — Part 1: Determination of bending/shear strength by a three-point method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Prebaked anodes and cathode blocks — Part 1: Determination of bending/shear strength by the three-point method 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials used in the production of aluminium — Prebaked anodes and cathode blocks — Part 2: Determination of flexural strength by the four-point method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Prebaked anodes and cathode blocks — Part 2: Determination of flexural strength by the four-point method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Prebaked anodes and cathode blocks — Part 2: Determination of flexural strength by the four-point method 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Anodes, cathodes blocks, sidewall blocks and baked ramming pastes — Determination of the thermal conductivity using a comparative method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes — Determination of the reactivity to carbon dioxide — Part 1: Loss in mass method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes — Determination of the reactivity to carbon dioxide — Part 2: Thermogravimetric method 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes and sidewall blocks — Determination of the reactivity to air — Part 1: Loss in mass method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Baked anodes and sidewall blocks — Determination of the reactivity to air — Part 2: Thermogravimetric method 
                           | 
                        90.93 | |
| 
                           Carbonaceous products for the production of aluminium — Baked anodes and shaped carbon products — Determination of the coefficient of linear thermal expansion 
                           | 
                        95.99 | |
| 
                           Carbonaceous products for the production of aluminium — Baked anodes and shaped carbon products — Determination of the coefficient of linear thermal expansion 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold-ramming pastes — Methods of sampling 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold-ramming pastes — Determination of effective binder content and aggregate content by extraction with quinoline, and determination of aggregate size distribution 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold-ramming pastes — Determination of volatile-matter content of unbaked pastes 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold and tepid ramming pastes — Preparation of unbaked test specimens and determination of apparent density after compaction 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold and tepid ramming pastes — Preparation of unbaked test specimens and determination of apparent density after compaction 
                           | 
                        60.60 | |
| 
                           Carbonaceous materials for the production of aluminium — Cold and tepid ramming pastes — Expansion/shrinkage during baking 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Cold and tepid ramming pastes — Expansion/shrinkage during baking 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Petroleum coke — Determination of trace metals by inductively coupled plasma atomic emission spectrometry 
                           | 
                        90.20 | |
| 
                           Carbonaceous materials for the production of aluminium — Cathode block materials — Part 1: Determination of the expansion due to sodium penetration with application of pressure 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Cathode block materials — Part 1: Determination of the expansion due to sodium penetration with application of pressure 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Cathode block materials — Part 1: Determination of the expansion due to sodium penetration with application of pressure 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Cathode block materials — Part 2: Determination of the expansion due to sodium penetration without application of pressure 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Cathode block materials — Part 2: Determination of the expansion due to sodium penetration without application of pressure 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Baked anodes — Determination of the air permeability 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Determination of baking level expressed by equivalent temperature 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Determination of baking level expressed by equivalent temperature 
                           | 
                        60.60 | |
| 
                           Aluminium oxide used for the production of primary aluminium — Determination of attrition index 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold and tepid ramming pastes — Determination of rammability of unbaked pastes 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold and tepid ramming pastes — Determination of rammability of unbaked pastes 
                           | 
                        60.60 | |
| 
                           Carbonaceous materials for the production of primary aluminium — Baked carbon bodies — Determination of the dynamic elasticity modulus by the resonance method 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials for the production of aluminium — Cathode blocks and baked anodes — Determination of compressive strength 
                           | 
                        95.99 | |
| 
                           Carbonaceous materials for the production of aluminium — Cathode blocks and baked anodes — Determination of compressive strength 
                           | 
                        90.20 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Method for the determination of tapped and untapped density 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Method for the determination of flow time 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for the production of aluminium — Determination of alpha alumina content — Method using X-ray diffraction net peak areas 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cold and tepid ramming pastes — Preparation of baked test pieces and determination of loss on baking 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Calcined coke — Determination of crystallite size of calcined petroleum coke by X-ray diffraction 
                           | 
                        90.93 | |
| 
                           Materials for the production of primary aluminium — Dense refractory bricks — Determination of cryolite resistance 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Determination of  density by gas pyknometry (volumetric) using helium as the analysis gas — Solid materials 
                           | 
                        90.93 | |
| 
                           Carbonaceous materials used in the production of aluminium — Cathode — Cathode abrasion testing 
                           | 
                        60.60 | |
| 
                           Aluminium oxide primarily used for the production of aluminium —  Preparation and  storage of test samples 
                           | 
                        90.93 | |
| 
                           Aluminium oxide primarily used for production of aluminium — Determination of trace elements — Wavelength dispersive X-ray fluorescence spectrometric method 
                           | 
                        90.93 | |
| 
                           Aluminium oxide used for the production of  aluminium — Determination of particles passing a 20 micrometre aperture sieve 
                           | 
                        90.93 | 
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