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 |
abolished2009-11-01 ,2009-11-1,1987-8-1 |
|
GB 7478-1987 |
Water quality; Determination of ammonium; Distillation and titration method |
$45.00 |
via email in 1~3 business day |
superseded,2010-4-1,1987-8-1 |
|
GB 7479-1987 |
Water quality - Determination of ammonium-Nessler |
$60.00 |
via email in 1~3 business day |
superseded,2010-4-1,1987-8-1 |
|
GB 748-1983 |
Sulfate resistance portland cement |
|
via email in business day |
superseded,1996-1-2, |
|
GB 748-1996 |
Sulfate resistance portland cement |
$100.00 |
via email in 1~3 business day |
superseded,2005-12-1,1996-1-2 |
|
GB 748-2005 |
Sulfate Resistance Portland Cement |
$174.00 |
immediately |
valid,,2005-12-1 |
|
GB 7481-1987 |
Water quality; Determination of ammonium; Spectrophotometric method with salicylic acid |
$75.00 |
via email in 1~3 business day |
superseded,2010-4-1,1987-8-1 |
|
GB 7485-1987 |
Water quality; Determination of total arsenic; Silver diethyldithiocarbamate spectrophotometric method |
$60.00 |
via email in 1~3 business day |
valid,,1987-8-1 |
|
GB 7486-1987 |
Water quality; Determination of cyanide; Part 1:Determination of total cyanide |
$120.00 |
via email in 1~3 business day |
superseded,2009-11-1,1987-8-1 |
|
GB 7489-1987 |
Water quality; Determination of dissolved oxygen; Iodometric method |
$90.00 |
via email in 1~3 business day |
valid,,1987-8-1 |
|
GB 7491-1987 |
Water quality; Determination of volatile phenolic; Compounds; After distillation with bromine method |
$30.00 |
via email in 1~3 business day |
abolished2009-12-01,2009-12-1,1987-8-1 |
|
GB 7492-1987 |
Water quality; Determination of BHC and DDT; Gas chromatography |
$105.00 |
via email in 1~3 business day |
valid,,1987-8-1 |
|
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,,1987-11-1 |
|
GB 7498-1987 |
Detail specification for electronic components--Semiconductor integrated circuit- CF741 operational amplifier |
$250.00 |
via email in 1~3 business day |
superseded,1997-1-1,1987-11-1 |
|
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superseded,1997-1-1,1987-11-1 |
|
GB 75-1976 |
|
|
via email in business day |
superseded,1986-6-1, |
|
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,1997-1-1,1987-11-1 |
|
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,1997-1-1,1987-11-1 |
|
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,1997-1-1,1987-11-1 |
|
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,1997-1-1, |
|
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