High purity gas purity technical index GB

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High-purity argon technical index GB/T 10624-1995--------------------------------------------------2 pages high-purity nitrogen technical index GB8980-88--------------------------------------------------3 pages high-purity oxygen technical index GB/T 14599-93--------------------------------------------------4 pages medical oxygen technical index GB 8982-1998--------------------------------------------------5 pages industrial hydrogen technical index GB/T 3634-1995--------------------------------------------------6 pages of pure argon technical indicators GB/T 4842-1995--------------------------------------------------7 pages of pure nitrogen technical indicators GB8979-88--------------------------------------------------8 pages of industrial oxygen technical indicators GB/T 3863-1995----------------------------------------9 pages of high-purity argon technical indicators GB/T 10624-1995 Project indicators Excellent product First-class qualified product Argon purity, 10-2, ≥ 99.9996 99.9993 99.999 Hydrogen content, 10-6, ≤ 2 4 5 Oxygen content, 10-6, ≤ 1 1 2 Nitrogen content, 10-6, ≤ 0.5 1 1 Total carbon content (calculated as methane), 10-6, ≤ 0.5 1 2 Moisture content, 10-6, ≤ 1 2.16 4 Note: The purity and content in the table are volume fractions. The argon purity in the table does not deduct the moisture content. High purity argon inspection rules: 1. High purity argon should be inspected by the quality inspection department of the manufacturer. Ensure that all factory products comply with the requirements of this standard. 2. The quality of high-purity argon is inspected bottle by bottle and item by item. 3. When one of the indicators in the inspection results does not meet the requirements of this standard, the bottle of product is deemed unqualified. 4. Users have the right to inspect and accept products in accordance with the provisions of this standard. 5. When the supplier and the buyer have objections to the inspection results, both parties shall jointly inspect or submit to arbitration. High-purity nitrogen technical indicators GB8980-88 Indicator Name Indicator Premium grade product First-class quality product Purity 1), % (V/V), ≥ 99.9996 99.9993 99.999 Oxygen content, 10-6, V/V, ≤ 1.0 2.0 3.0 Hydrogen content, 10-6, V/V, ≤ 0.5 1.0 1.0 Total content of CO, CO2, and CH4, 10-6, V/V, ≤ 1.0 2.0 3.0 Water content 2), % (V/V), ≤ 1.0 2.6 5.0 Note: 1) The purity contains trace amounts of inert gases helium, neon and argon. 　　2) Liquid nitrogen does not specify water content. High purity nitrogen inspection rules: 1. High-purity nitrogen should be inspected and accepted by the quality supervision and inspection department of the manufacturer. Ensure that all factory products comply with the requirements of this standard. 2. Bottled nitrogen shall be randomly inspected according to the number of bottles specified in the table and accepted in batches. 2.1 The batch submitted for acceptance consists of bottled nitrogen filled continuously at one time or filled in one operation shift by the same technician. 2.2 When all indicators of the inspection results meet the requirements of this standard, the entire batch will be accepted. 2.3 When any index of the inspection sample does not meet the requirements of this standard, double sampling inspection will be carried out from the same batch of products. If there is still one index that does not meet the requirements of this standard, the entire batch will be rejected. Product batch, bottles 1-8 9-15 16-25 26-50 >51 Sampling quantity, bottles 2 3 4 5 6 3. High-purity nitrogen transported by pipelines must be sampled and inspected at least twice within 8 hours. The inspection results are applicable to any amount of high-purity nitrogen transported within 8 hours. 4. Liquid high-purity nitrogen should be sampled and inspected from each storage and transportation container. When an indicator of the inspection result does not meet the requirements of this standard, the product cannot be accepted. 5. Users have the right to inspect and accept products in accordance with the provisions of this standard. When the supplier and the buyer have objections to the inspection results, both parties shall jointly inspect and accept the goods or submit for arbitration. High-purity oxygen technical indicators GB/T 14599-93 Project indicators Premium products First-class qualified products Oxygen purity, 10-2, ≥ 99.999 99.998 99.995 Argon content, 10-6, ≤ 2 5 10 Nitrogen content, 10-6, ≤ 5 10 20 Carbon dioxide content, 10-6, ≤ 0.5 1 1 Total carbon content (calculated as methane), 10-6, ≤ 0.5 1 2 Moisture content, dew point ℃, ≤ (10-6) -72 (2) -70 (2.5) -69 (3) Note: The purity and content in the table are volume fractions. High purity oxygen inspection rules: High purity oxygen should be inspected by the quality inspection department of the manufacturer. The manufacturer should ensure that all manufactured products comply with the requirements of this standard. Bottled high-purity oxygen should be inspected bottle by bottle. Liquid high-purity oxygen is sampled and tested from each storage and transportation container. Check the high-purity oxygen in the pipeline, take samples at the set analysis port, and sample and check at least twice within 8 hours. When all indicators of the inspection results meet the standard requirements, the entire batch is qualified for acceptance. When any indicator of the tested high-purity oxygen does not meet the requirements of this standard, the bottle of product is deemed to be unqualified. Users also accept the product in accordance with the provisions of this standard. Users measure the pressure inside the cylinder within three days of the high-purity oxygen being put into storage. When users and manufacturers disagree on product quality, both parties shall jointly inspect or submit for arbitration. Medical oxygen technical indicators GB 8982-1998 Project indicators Oxygen content, 10-2, V/V, ≥ 99.5 Moisture content (dew point), ℃, ≤ -43 Carbon dioxide content was tested and passed according to the prescribed method. Carbon monoxide content was tested and qualified according to the prescribed method. Gaseous acidic substances and gaseous alkaline substances were tested and qualified according to the prescribed method. Ozone and other gaseous oxides were tested and qualified according to the prescribed method. No peculiar smell. Note: Liquid oxygen does not specify moisture index Medical oxygen inspection rules: 1. Medical oxygen should be inspected before leaving the factory by the quality supervision and inspection department of the manufacturer. The manufacturer should ensure that all medical oxygen shipped from the factory is qualified. 2. Bottled medical oxygen is sampled in batches. A batch is produced continuously by an operating class. Randomly select 2% samples from each batch of products for inspection. When the batch size is less than 100 bottles, the number of samples taken cannot be less than 2 bottles ； When there are more than 100 bottles, no more than 5 bottles can be sampled. When the inspection result is that one bottle does not meet any of the requirements of this standard, the sampling inspection should be repeated in the same batch of products. If any indicator still fails to meet the requirements of this standard as a result of re-inspection, the batch of products will be deemed unqualified. 3. Liquid oxygen is sampled from the liquid phase of each filled container, evaporated to gaseous state and then inspected. If any of the test results does not meet the requirements of this standard, the product will be deemed unqualified. 4. When users and manufacturers disagree on product quality, both parties shall jointly inspect or submit to arbitration. Industrial hydrogen technical indicators GB/T 3634-1995 Project indicators Premium products First-class qualified products Hydrogen purity, 10-2, ≥ 99.90 99.50 99.0 Oxygen content, 10-2, ≤ 0.01 0.20 0.40 Nitrogen content, 10-2, ≤ 0.40 0.30 0.60 Chlorine conforms to inspection conforms to inspection conforms to inspection Alkali conforms to inspection conforms to inspection conforms to inspection Moisture dew point, ℃ -43 ---- ---- Free water, ml/bottle ---- 100 Note: The purity and content in the table are expressed in volume fraction. Hydrogen produced by electrolysis does not require chlorine. Industrial hydrogen inspection rules: 1. Industrial hydrogen should be inspected and accepted by the quality supervision and inspection department of the production plant. Ensure that all factory products comply with the requirements of this standard. 2. Bottled argon gas shall be randomly inspected according to the number of bottles specified in the table and accepted in batches. When the inspection result is that one bottle does not meet the requirements of this standard, the sampling inspection should be doubled again. If there is still one bottle that does not meet the requirements of this standard, the batch of products is deemed to be unqualified. Product batch, bottle 51 Sampling quantity, bottle 2 3 4 5 6 3. Pure nitrogen transported by pipelines must be sampled and tested at least twice within 8 hours. The test results are applicable to any amount of pure nitrogen transported within 8 hours. 4. Liquid pure nitrogen should be sampled and inspected from each storage and transportation container. When an indicator of the inspection result does not meet the requirements of this standard, the product cannot be accepted. 5. Users have the right to inspect and accept products in accordance with the provisions of this standard. When the supplier and the buyer have objections to the inspection results, both parties shall jointly inspect and accept the goods or submit for arbitration. Technical indicators for industrial oxygen GB/T 3863-1995 Project indicators Premium products First-class qualified products Oxygen content (volume fraction) 10-2 ≥ 99.7 99.5 99.2 Moisture free water, ml/bottle ≤ ---- No free water 100 Dew point ℃ -43 ---- ---- Note: Liquid oxygen does not specify water content. Industrial oxygen inspection rules: 1. Industrial oxygen should be inspected by the quality supervision and inspection department of the manufacturer. The manufacturer should ensure that all industrial oxygen shipped from the factory meets the requirements of this standard. 2. Bottled industrial oxygen should be accepted in batches and randomly sampled and inspected according to the number of bottles specified in the table below. When the inspection result is that one bottle does not meet the requirements of this standard, the sampling inspection should be doubled again. If there is still one bottle that does not meet the requirements of this standard, the batch of products is deemed to be unqualified. Product batch, bottles 1-8 9-15 16-25 26-50 >51 Sampling quantity, bottles 2 3 4 5 6 3. Industrial oxygen transported by pipelines must be sampled and inspected at least twice within 8 hours. The inspection results are applicable to any amount of industrial oxygen transported within 8 hours. 4. Liquid industrial oxygen should be sampled and inspected from each storage and transportation container. 5. Users have the right to inspect and accept products in accordance with the provisions of this standard. 6. When users and manufacturers have objections to product quality, both parties shall negotiate together or submit to arbitration.