Number
Name
Status
- GB/T 7470-1987 《Water quality--Determination of lead--Spectrophotometric method with dithizone》 Active Products
- GB/T 7471-1987 《Water quality--Determination of cadmium--Spectrophotometric method with dithizone》 Active Products
- GB/T 7472-1987 《Water quality--Determination of zinc--Spectrophotometric method with dithizone》 Active Products
- GB/T 7473-1987 《Water quality--Determination of copper--2，9-dimethy-1，10-phenanthroline spectrophotometric method》 Active Products
- GB/T 7474-1987 《Water quality--Determination of copper--Sodium diethyldithiocabamate spectrophotometric method》 Active Products
- GB/T 7478-1987 《Water quality--Determination of ammonium--Distillation and titration method》 Active Products
- GB/T 7479-1987 《Water quality--Determination of ammonium--Nessler’s reagent colorimetric method》 Active Products
- GB/T 11898-1989 《Water quality--Determination of free chlorine and total chlorine--Spectrophotometric method using N，N-diethyl-1，4-phenylenediamine》 Active Products
- GB/T 11899-1989 《Water quality--Determination of sulfate--Gravimetric method》 Active Products
- GB/T 11903-1989 《Water quality--Determination of colority》 Active Products
- GB/T 11913-1989 《Water quality--Determination of dissolved oxygen--Electrochemical probe method》 Active Products
- GB/T 11914-1989 《Water quality--Determination of thechemical oxyyen demand--Dichromate method》 Active Products
- GB/T 11915-1989 《Water quality--Vocabulary--Part 3～7》 Active Products
- GB 11607-1989 《Water quality standard for fisheries》 Active Products
- GB/T 9803-1988 《Water quality--Determination of pentachlorophenol by safranine-T spectrophotometric method》 Active Products
- GB/T 8972-1988 《Water quality--Determination of pentachlorophenol--Gas chromatography》 Active Products
- GB/T 11906-1989 《Water quality--Determination of manganese--Potassium periodate spectrophotometric method》 Active Products
- GB/T 11908-1989 《Water quality--Determination of silver--Spectrophotometry with cadion 2B》 Active Products
- GB/T 11909-1989 《Water quality--Determination of silver--Spectrophotometric method with 3，5-Br2-PADAP》 Active Products
- GB/T 11910-1989 《Water quality--Determination of nickel--Dimethylglyoxime spectrophotometric method》 Active Products
- GB/T 11891-1989 《Water quality--Determination of Kjeldahl nitrogen》 Active Products
- GB/T 11892-1989 《Water quality--Determination of permanganate index》 Active Products
- GB/T 11897-1989 《Water quality--Determination of free chlorine and total chlorine--Titrimetric method using N，N-diethyl-1，4-phenylenediamine》 Active Products
- GB/T 11889-1989 《Water quality--Determination of aniline compounds--Spectrophotometric method with N-(1-naphthyl) ethy lenediamine》 Active Products
- GB/T 11890-1989 《Water quality--Determination of benzeneand its analogies--Gas chromatographic method》 Active Products
- GB/T 11893-1989 《Water quality--Determination of total phosphorus--Ammonium molybdate spectrophotometric method》 Active Products
- GB/T 11894-1989 《Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photo metric method》 Active Products
- GB/T 11896-1989 《Water quality--Determination of chloride--Silver nitrate titration method》 Active Products
- GB/T 11900-1989 《Water quality--Determination of trace amounts of arsenic--Spectrophotometric method with silver salt》 Active Products
- GB/T 11901-1989 《Water quality--Determination of suspended substance--Gravimetric method》 Active Products