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Standard No.	Title	Price(USD)	Delivery	Status	Add to Cart
GB 11912-1989	Water quality-Determination of nickel-Flame atomic absorption spectrometric method	45.0	via email in 1~3 business day	valid,,1990-7-1
GB 11895-1989	Water quality-Determination of benzo(alpha)-pyrene-Acetylated paper chromatography with fluorescence spectrophotometric method	75.0	via email in 1~3 business day	valid,,1990-7-1
GB 11902-1989	Water quality - Determinaton of selenium - Diaminonaphthalene fluorometric method	45.0	via email in 1~3 business day	valid,,1990-7-1
GB 11891-1989	Water quility-Determination of Kjeldahl nitrogen	80.0	via email in 1~3 business day	valid,,1990-7-1
GB 11905-1989	Water quality - Determination of calcium and magnesium-Atomic absorption spectrophotometric method	45.0	via email in 1~3 business day	valid,,1990-7-1
GB 11906-1989	Water quality-Determination of manganese-Potassium periodate spectrophotometric method	45.0	via email in 1 business day	valid,,1990-7-1
GB 11909-1989	Water quality-Determination of silver-Spectrophotometric method with 3,5-Br2-PADAP	30.0	via email in 1~3 business day	superseded2009-11-01 ,2009-11-1,1990-7-1
GB 11890-1989	Water quality - Determination of benzene and its analogies gas chromatographic method	120.0	via email in 1 business day	superseded,2020-3-24,1990-7-1
GB 11910-1989	Water quality - Determination of nickel - Dimethylglyoxime spectrophotometric method	45.0	via email in 1~3 business day	valid,,1990-7-1
GB 11914-1989	Water quality-Determination of the chemical oxygen demand-Dichromate method	60.0	via email in 1~3 business day	abolished2017-05-01 ,2017-5-1,1990-7-1
GB 11899-1989	Water quality-Determination of sulfate-Gravimatric method	60.0	via email in 1~3 business day	valid,,1990-7-1
GB 11913-1989	Water quality-Determination of dissolved oxygen-Electrochemical probe method	195.0	via email in 1~3 business day	abolished2009-12-01,2009-12-1,1990-7-1
GB 11904-1989	Water quality-Determinatoin of potassium and sodium-Flame atomic absorption spectrophotometry	45.0	via email in 1~3 business day	valid,,1990-7-1
GB 11892-1989	Water quality-Determination of permanganate index	60.0	via email in 1~3 business day	valid,,1990-7-1
GB 11907-1989	Water quality - Determination of silver-Flame atomic absorption spectrophotometric method	30.0	via email in 1~3 business day	valid,,1990-7-1
GB 11897-1989	Water quality-Determination of free chlorine and total chlorine-Titrimetric method using N,N-diethyl-1,4-phenylenediamine	75.0	via email in 1~3 business day	abolished2010-12-01 ,2010-12-1,1990-7-1
GB 11900-1989	Water quality-Determination of trace amounts of arsenic-Borohydride potassium-nitrale silver spectrophotometric method	60.0	via email in 1 business day	valid,,1990-7-1
GB 11908-1989	Water quality-Determination of silver-Spectrophotometry with cadion 2B	30.0	via email in 1~3 business day	superseded2009-11-01 ,2009-11-1,1990-7-1
GB 11911-1989	Water quality - Determination of iron and manganese-Flame atomic absorption spectrometric method	30.0	via email in 1 business day	valid,,1990-7-1
GB 11889-1989	Water quality-Determination of aniline compounds-Spectrophotometric method with N-(1-naphthyl) eth	60.0	via email in 1~3 business day	valid,,1990-7-1
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