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Standard No.	Title	Price(USD)	Delivery	Status	Add to Cart
GB/T 655-2011	Chemical Reagent - Ammonium Persulfate	$90.00	immediately	valid,,2011-10-1
GB/T 656-1977	Chemical reagents--Ammonium dichromate	$180.00	via email in 1~3 business day	superseded,2004-5-1,1977-10-1
GB/T 656-2003	Chemical reagent—Ammonium dichromate	$90.00	via email in 1~3 business day	valid,,2004-5-1
GB/T 657-1993	Chemical reagent. Hexaammonium heptamolybdate terahydrate	$180.00	via email in 1~3 business day	abolished2011-12-01 ,2011-12-1,1993-1-2
GB/T 657-2011	Chemical reagent—Hexaammonium heptamolybdate tetrahydrate	$120.00	via email in 1~3 business day	valid,,2011-12-1
GB/T 658-1988	Chemical reagent-Ammonium chloride	$264.00	via email in 1~3 business day	superseded,2007-6-1,1989-4-1
GB/T 658-2006	Chemical reagent - Ammonium chloride	$180.00	via email in 1~3 business day	valid,,2007-6-1
GB/T 659-1993	Chemical reagents. Ammonium nitrate	$180.00	via email in 1~3 business day	abolished2011-12-01 ,2011-12-1,1993-1-2
GB/T 659-2011	Chemical reagent—Ammonium nitrate	$120.00	via email in 1~3 business day	valid,,2011-12-1
GB/T 660-1992	Chemical reagents;Ammonium thiocyanate	$184.00	via email in 1~3 business day	superseded,2015-12-1,1993-7-1
GB/T 660-2015	Chemical reagent―Ammonium thiocyanate	$130.00	via email in 1~3 business day	valid,,2015-12-1
GB/T 661-1992	Chemical reagents;Ammonium ferrous sulfate	$184.00	via email in 1~3 business day	superseded,2011-12-1,1993-7-1
GB/T 661-2011	Chemical reagent—Ammonium iron(Ⅱ) sulfate hexahydrate	$160.00	via email in 1~3 business day	valid,,2011-12-1
GB/T 664-1993	Chemical reagents;Ferrous sulfate	$180.00	via email in 1~3 business day	superseded,2011-12-1,1993-1-2
GB/T 664-2011	Chemical reagent—Iron(Ⅱ)sulfate heptahydrate	$120.00	immediately	valid,,2011-12-1
GB/T 665-1988	Chemical reagent-Copper(11) sulfate pentahydrate	$184.00	via email in 1~3 business day	superseded,2008-4-1,1989-4-1
GB/T 665-2007	Chemical reagent - Copper (Ⅱ) sulfate pentahydrate	$140.00	via email in 1~3 business day	valid,,2008-4-1
GB/T 666-1993	Chemical reagent. Zinc sulfate heptahydrate	$180.00	via email in 1~3 business day	abolished2011-12-01 ,2011-12-1,1993-1-2
GB/T 666-2011	Chemical reagent—Zinc sulfate heptahydrate	$180.00	via email in 1~3 business day	valid,,2011-12-1
GB/T 667-1995	Chemical reagent－Zinc nitrate hexahydrate	$140.00	via email in 1~3 business day	superseded,2024-3-1,1996-8-1
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