Number
Name
Status
- GB/T 38812.4-2022 《Direct reduced iron—Determination of metallic iron—Bromine-methanol titrimetric method》 Active Products
- GB/T 5686.2-2022 《Ferromanganese, ferromanganese-silicon, nitrogen-bearing ferromanganese and manganese metal—Determination of silicon content—Molybdenum blue spectrophotometric method , silicon potassium fluoride titrimetric method and perchloric acid dehydration gravimetric method》 Active Products
- GB/T 6150.2-2022 《Methods for chemical analysis of tungsten concentrates—Part 2: Determination of tin content—Potassium iodate titrimetry and inductively coupled plasma atomic emission spectrometry》 Active Products
- GB/T 5686.1-2022 《Ferromanganese，ferromanganese-silicon，nitrogen-bearing ferromanganese and manganese metal—Determination of manganese content—Potentiometric method， titrimetric method after ammonium nitrate oxidation and titrimetric method after perchloric acid oxidation》 Active Products
- GB/T 38265.3-2022 《Test methods for soft soldering fluxes—Part 3:Determination of acid value—Potentiometric and visual titration methods》 Active Products
- GB/T 41633.2-2022 《Insulating liquids—Determination of acidity—Part 2: Colourimetric titration》 Active Products
- GB/T 6730.5-2022 《Iron ores—Determination of total iron content—Titrimetric methods after titanium(III) chloride reduction》 Active Products
- GB/Z 41259-2022 《Method for determination of quaternary ammonium compounds in preservative-treated wood and wood preservatives by potentiometric titrator》 Active Products
- GB 5084-1992 《Standards for irrigation water quality》 Abolish Products
- GB/T 7476-1987 《Water quality--Determination of calcium--EDTA titrimetric method》 Active Products
- GB/T 7477-1987 《Water quality--Determination of thesum of calcium and magnesium--EDTA titrimetric method》 Active Products
- GB/T 7494-1987 《Water quality--Determination of anionic surfactants--Methylene blue spectrophotometric method》 Active Products
- GB/T 7488-1987 《Water quality--Determination of biochemical oxygen demand after 5 days(BOD5)--Dilution and seeding method》 Active Products
- GB/T 7489-1987 《Water quality--Determination of dissolved oxygen--Iodometric method》 Active Products
- GB/T 7487-1987 《Water quality--Determinationof cyanide--Part 2:Determination of cyanide》 Active Products
- GB/T 7485-1987 《Water quality--Determination of total arsenic--Silver diethyldithiocarbamate spectrophotometricmethod》 Active Products
- GB/T 7486-1987 《Water quality--Determination of cyanide--Part 1:Determination of total cyanide》 Active Products
- GB/T 6816-1986 《Water quality--Vocabulary--Part 1 and part 2》 Active Products
- GB/T 7480-1987 《Water quality--Determination of nitrate--Spectrophotometric method with phenol disulfonic acid》 Active Products
- GB/T 7482-1987 《Water quality--Determination of fluoride--Visual colorimetry with zirconium alizarinsulfonate》 Active Products
- GB/T 7483-1987 《Water quality--Determination of fluoride--Fluor reagent spectrophotometric》 Active Products
- GB/T 7484-1987 《Water quality--Determination of fluoride--Ion selective electrode method》 Active Products
- GB/T 7491-1987 《Water quality--Determination of volatile phenolic compounds--After distillation with bromine method》 Active Products
- GB/T 7492-1987 《Water quality--Determination ofBHC and DDT--Gas chromatography》 Active Products
- GB/T 7493-1987 《Water quality--Determination of nitrogen(nitrite)--Spectrophotometric method》 Active Products
- GB/T 7490-1987 《Water quality--Determination of volatile phenolic compounds--After distillation by means of 4-AAP spectrophotometric method》 Active Products
- GB/T 7481-1987 《Water quality--Determination of ammonium--Spectrophotometric method with salicylic acid》 Active Products
- GB/T 7466-1987 《Water quality--Determination of total chromium》 Active Products
- GB/T 7467-1987 《Water quality--Determination of chromium(Ⅵ)--1，5 Diphenylcarbohydrazide spectrophotometric method》 Active Products
- GB/T 7469-1987 《Water quality--Determination of the total mercury--Potassium permanganate-pootassium peralfate descomposed method--Dithizone spectrophotometric method》 Active Products