Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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Standard No. Title Price(USD) Delivery Status Add to Cart
GB 7474-1987 Water quality; Determination of copper; Sodium diethyldithiocarbamate spectrophotometric method $60.00 via email in 1~3 business day abolished
GB 7478-1987 Water quality; Determination of ammonium; Distillation and titration method $45.00 via email in 1~3 business day superseded
GB 7479-1987 Water quality - Determination of ammonium-Nessler $60.00 via email in 1~3 business day superseded
GB 748-1983 Sulfate resistance portland cement via email in business day superseded
GB 748-1996 Sulfate resistance portland cement $100.00 via email in 1~3 business day superseded
GB 748-2005 Sulfate Resistance Portland Cement $174.00 immediately valid
GB 7481-1987 Water quality; Determination of ammonium; Spectrophotometric method with salicylic acid $75.00 via email in 1~3 business day superseded
GB 7485-1987 Water quality; Determination of total arsenic; Silver diethyldithiocarbamate spectrophotometric method $60.00 via email in 1~3 business day valid
GB 7486-1987 Water quality; Determination of cyanide; Part 1:Determination of total cyanide $120.00 via email in 1~3 business day superseded
GB 7489-1987 Water quality; Determination of dissolved oxygen; Iodometric method $90.00 via email in 1~3 business day valid
GB 7491-1987 Water quality; Determination of volatile phenolic; Compounds; After distillation with bromine method $30.00 via email in 1~3 business day abolished
GB 7492-1987 Water quality; Determination of BHC and DDT; Gas chromatography $105.00 via email in 1~3 business day valid
GB 7495-1987 protecting distance between overhead power line and receiving station of AM broadcasting $75.00 via email in 1~3 business day valid
GB 7498-1987 Detail specification for electronic components--Semiconductor integrated circuit- CF741 operational amplifier $250.00 via email in 1~3 business day superseded
GB 7499-1987 Detail specification for electronic components--Semiconductor integrated circuit- CW723 Multiterminal adjustable voltage regulator $270.00 via email in 1~3 business day superseded
GB 75-1976 via email in business day superseded
GB 7500-1987 General principles of measuring methods of audio preamplifiers for semiconductor audio integrated circuits $190.00 via email in 1~3 business day superseded
GB 7501-1987 General principles of measuring methods of stereo decoders for semiconductor audio integrated circuits $450.00 via email in 1~3 business day superseded
GB 7502-1987 General principles of measuring methods of level display drivers for semiconductor audio integrated circuits $180.00 via email in 1~3 business day superseded
GB 7503-1987 General principles of measuring methods of linear amplifiers for semiconductor integrated circuits $410.00 via email in 1~3 business day superseded
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