GB/T 19923-2024 Reuse of urban recycling water—Water quality standard for industrial uses

GB/T 19923-2005 The reuse of urban recycling water—Water quality standard for industrial uses

GB/T 6920-1986 Water quality—Determination of pH value—Glass electrode method GB/T 7477-1987 Water quality—Determination of the sum of calcium and magnesium—EDTA titrimetric method GB/T 7482-1987 Water quality—Determination of fluoride—Visual colorimetry with zirconium alizarinsulfonate GB/T 7483-1987 Water quality—Determination of fluoride—Fluor reagent spectrophotometric method GB/T 7484-1987 Water quality—Determination of fluoride—Ion selective electrode method GB/T 7488-1987 Water quality—Determination of biochemical oxygen demand after 5 days(BOD5)—Dilution and seeding method GB/T 7494-1987 Water quality—Determination of anionic surfactants—Methylene blue spectrophotometric method GB/T 11893-1989 Water quality—Determination of total phosphorus— Ammonium molybdate spectrophotometric method GB/T 11894-1989 Water quality—Determination of total nitrogen—Alkaline potassium persulfate digestion-UV spectrophotometric method GB/T 11896-1989 Water quality—Determination of chloride—Silver nitrate titration method GB/T 11897-1989 Water quality—Determination of free chlorine and total chlorine—Titrimetric method using N,N-diethyl-1,4-phenylenediamine GB/T 11898-1989 Water quality—Determination of free chlorine and total chlorine—Spectrophotometric method using N,N-diethyl-1,4-phenylenediamine GB/T 11899-1989 Water quality—Determination of sulfate—Gravimetric method GB/T 11903-1989 Water quality—Determination of colority GB/T 11911-1989 Water quality—Determination of irom and manganese—Flame atomic absorption spectrometric method GB/T 11914-1989 Water quality—Determination of the chemical oxygen demand—Dichromate method GB/T 12149-2007 Water for industrial circulating cooling system and boiler—Determination of silica GB/T 12149-2017 Determination of silica in water for industrial circulating cooling system and boiler GB/T 15451-1995 Industrial circulating cooling water—Determination of alkalinity GB/T 15451-2006 Industrial circulating cooling water—Determination of total and composite alkalinity GB/T 16489 GB 18918-2002 GB/T 22597-2008 Reclaimed wastewater—Determination of chemical oxygen demand—Potassium dichromate method GB/T 22597-2014 Determination of chemical oxygen demand of reclaimed wastewater—Potassium dichromate method GB/T 39302-2020 Reclaimed water quality—Determination of anionic surfactants—Methylene blue spectrophotometric method GB/T 50050-2017 Code for design of industrial recirculating cooling water treatment CJ/T 51-2004 Methods for the examination of municipal sewage CJ/T 51-2018 Examination methods for municipal sewage HJ/T 60-2000 Water quality: Determination of sulfide by iodometric method HJ/T 199-2005 The determination of total nitrogen in water using gas-phase molecular absorption spectroscopy HJ/T 200-2005 Water quality determination of sulfide by gas-phase molecular absorption spectroscopy HJ/T 342-2007 Water quality-Determination of sulfate-barium chromate spectrophotometry HJ 347.1-2018 Water quality - Determination of Escherichia coli in feces - Filter method HJ 347.2-2018 Water quality: Determination of fecal coliform group using multiple-tube fermentation method HJ 487-2009 Water quality: Determination of fluoride using Zirconia Erizoic Acid Sulfonic Acid Visual Colorimetry HJ 488-2009 Water quality determination of fluoride ion: Fluoride reagent spectrophotometry HJ 493-2009 Water quality: Sample preservation and management technical regulations HJ 494-2009 Water quality sampling technical guidance HJ 495-2009 Water quality sampling plan design technical guidance HJ 505-2009 Water quality: Determination of Biochemical Oxygen Demand (BOD5) by Dilution and Inoculation Method HJ 535-2009 Water quality determination of ammonia nitrogen using Nessler's reagent spectrophotometry HJ 536-2009 Water quality determination of ammonia nitrogen using salicylate spectrophotometry HJ 537-2009 Determination of Ammonia Nitrogen in Water - Distillation-Neutralization Titration MethodHJ 537-2009 Water Quality HJ 585-2010 Water quality determination of free and total chlorine using N,N-diethyl-1,4-phenylene diamine titration method HJ 586-2010 Water quality determination of free and total chlorine using N,N-diethyl-1,4-phenylene diamine spectrophotometry HJ 636-2012 Water quality determination of total nitrogen by alkaline potassium persulfate digestion and UV spectrophotometry HJ 637-2012 Water quality determination of oil and animal/vegetable fats by infrared spectrophotometry HJ 637-2018 Water quality determination of oil and animal/vegetable fats by infrared spectrophotometry HJ 665-2013 Water quality: Determination of ammonia nitrogen by continuous flow-salicylate spectrophotometry HJ 666-2013 Water quality: Determination of ammonia nitrogen by flow injection-salicylate spectrophotometry HJ 667-2013 HJ 667-2013 Water quality determination of total nitrogen: Continuous flow-Naphthalene-2,3-dichloronaphthalene spectrophotometric method HJ 668-2013 Water quality determination of total nitrogen by flow injection-Naphthalene-2,3-dicarboximide spectrophotometry HJ 670-2013 Water quality: Determination of Phosphorus and Total Phosphorus by Continuous Flow-Ammonium Molybdate Spectrophotometry HJ 671-2013 Water quality determination of phosphate and total phosphorus by flow injection-ammonium molybdate spectrophotometry HJ 700-2014 Water quality determination of 65 elements using inductively coupled plasma mass spectrometry HJ755-2015 "Method for the determination of total coliforms and fecal coliforms in water quality using rapid assay paper strip" HJ 755-2015 Water quality: Determination of total and fecal coliforms using membrane-immobilized bacteria filtration disk rapid test method HJ776-2015 Water quality determination of 32 elements using inductively coupled plasma atomic emission spectroscopy HJ 824-2017 Water quality determination of sulfide by flow injection-methylene blue spectrophotometry HJ 826-2017 Water quality determination of anionic surfactants by flow injection-methylene blue spectrophotometry HJ 828-2017 Water quality: Determination of Chemical Oxygen Demand using Dichromate Method HJ 970-2018 Water quality determination of petroleum substances by UV spectrophotometry (Provisional Method) HJ 1001-2018 The determination of total coliforms, fecal coliforms, and Escherichia coli in water quality using enzyme-substrate method HJ1075-2019 Water quality: Determination of turbidity using turbidity meter HJ 1147-2020 Water quality pH measurement using electrode method HJ 1226-2021 HJ 1226-2021 Water quality - Determination of sulfide. Methane blue spectrophotometric method