Water Testing
China National Accreditation Service for Conformity Assessment
Approval certificate attachment
(Registration number: CNAS L7034)
Approved range of testing capabilities
| serial number | Detection object | Project parameters | Test standard (method) | illustrate | |
| serial number | name | ||||
| water | |||||
| 1 | water | 1 | Chroma |
Standard test method for drinking water 1.1 Platinum-Cobalt Standard Colorimetry GB/T5750.4-2006 1.1 |
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| 2 | Chroma |
Determination of water color GB/T 11903-1989 |
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| 3 | Chroma | American <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 2020B Visual Colorimetry/2120 B | — | ||
| 4 | Turbidity |
Standard test method for drinking water 2.1 Scattering Method - Formal Callus Standard GB/T 5750.4-2006 2.1 |
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| 5 | Turbidity | <<Water and Wastewater Monitoring and Analysis Methods>> (Fourth Edition) (Supplementary Edition) 2002 State Environmental Protection Administration 3.1.4.3 Portable Turbidimeter Method / 3.1.4.3 | — | ||
| 6 | Turbidity | United States <<Standard Test Method for Water and Wastewater>> (22 edition, 2012) 2130 B Turbidity meter method / 2130 B | — | ||
| 7 | pH |
Standard test method for drinking water 5.1 Glass electrode method GB/T 5750.4-2006 5.1 |
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| 8 | pH |
Standard test method for drinking water 5.2 Standard buffer solution colorimetry GB/T 5750.4-2005 5.2 |
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| 9 | pH | <<Water and Wastewater Monitoring and Analysis Methods>> (Fourth Edition) (Supplementary Edition) 2002 State Environmental Protection Administration 3.1.6.2 Portable pH Meter Method / 3.1.6.2 | — | ||
| 10 | pH | US <<Standard Test Method for Water and Wastewater>> (22 edition, 2012) 4500-H+ B Electrode method 4500-H+ B | — | ||
| 11 | pH |
Marine monitoring code part 4: seawater analysis 26 pH meter method GB 17378.4-2007 26 |
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| 12 | Ammonia nitrogen |
Standard test method for drinking water 9.1 Nessler's reagent spectrophotometry GB/T 5750.5-2006 9.1 |
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| 13 | Ammonia nitrogen |
Water quality ammonia nitrogen test Nessler's reagent spectrophotometry Law HJ 535-2009 |
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| 14 | suspended matter |
Gravimetric method for determination of suspended solids in water GB/T 11901-1989 |
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| 15 | suspended matter | United States <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 2540 D Determination of Total Suspended Solids under 103-105 o C / 2540 D | — | ||
| 16 | suspended matter |
Marine monitoring code part 4: seawater analysis 27 gravimetric method GB 17378.4-2007 27 |
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| 17 | five-day biochemical oxygen demand |
Determination of Biochemical Oxygen Demand (BOD 5 ) in Water Quality by Dilution and Inoculation HJ 505-2009 |
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| 18 | five-day biochemical oxygen demand | United States <<Standard Test Method for Water and Wastewater>> (22 Edition, 2012) 5210 B 5-day Biochemical Oxygen Demand Test / 5210 B | — | ||
| 19 | five-day biochemical oxygen demand |
Marine Monitoring Specification Part 4: Seawater Analysis 33.1 Five-Day Culture Method (BOD5) GB 17378.4-2007 33.1 |
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| 20 | Cod |
Determination of water chemical oxygen demand by rapid digestion spectrophotometry HJ/T 399-2007 |
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| twenty one | Cod |
Marine Monitoring Code Part 4: Seawater Analysis 32 Alkaline Potassium Permanganate Method GB 17378.4-2007 32 |
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| twenty two | oxygen consumption |
Standard test method for drinking water 1.1 Acidic potassium permanganate titration GB/T 5750.7-2006 1.1 |
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| twenty three | total hardness |
Standard test method for drinking water 7.1 Disodium EDTA titration GB/T 5750.4-2006 7.1 |
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| twenty four | total hardness | US <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 2340C EDTA Titration Method / 2340C | — | ||
| 25 | chloride |
Drinking water standard test party Law 2.1 Silver nitrate volumetric method GB/T 5750.5-2006 2.1 |
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| 26 | chloride | United States <<Standard Test Method for Water and Wastewater>> (22 Edition, 2012) 4500-Cl-B Silver Nitrate Volumetric Method / 4500-Cl-B | — | ||
| 27 | Alkalinity | <<Water and Wastewater Monitoring and Analysis Methods>> (Fourth Edition) (Supplementary Edition) 2002 State Environmental Protection Administration 3.1.12.1 Acid-base indicator titration method / 3.1.12.1 | — | ||
| 28 | Alkalinity | United States <<Standard Test Method for Water and Wastewater>> (22 edition, 2012) 2320 B Titration method / 2320B | — | ||
| 29 | Free residual chlorine |
Standard Test Method for Drinking Water 1.1 N,N-Diethyl-p-phenylenediamine (DPD) Spectrophotometry GB/T 5750.11-2006 1.1 |
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| 30 | Free residual chlorine | US <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 4500-Cl-G DPD Spectrophotometry / 4500-Cl G | — | ||
| 31 | Conductivity |
Standard test method for drinking water 6.1 Electrode method GB/T 5750.4-2006 6.1 |
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| 32 | Conductivity | United States <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 2510 B Laboratory Method / 2510B | — | ||
| 33 | Nitrite nitrogen |
Standard test method for drinking water 10.1 Diazo Coupling Spectrophotometry GB/T 5750.5-2006 10.1 |
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| 34 | smell and taste |
Standard test method for drinking water 3.1 smell and taste GB/T 5750.4-2006 3.1 |
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| 35 | visible to the naked eye |
Standard test method for drinking water 4.1 direct observation GB/T 5750.4-2006 4.1 |
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| 36 | total dissolved solids |
Standard test method for drinking water 8.1 Weighing method GB/T 5750.4-2006 8.1 |
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| 37 | total dissolved solids | United States <<Standard Test Methods for Water and Wastewater>> (22nd Edition, 2012) 2540 C Determination of total dissolved solids at 180 o C / 2540 C | — | ||
| 38 | volatile solid | United States <<Standard Test Methods for Water and Wastewater>> (22nd Edition, 2012) 2540 E Determination of non-volatile and volatile solids at 550 o C / 2540 E | — | ||
| 39 | total nitrogen |
Determination of Total Nitrogen in Water Quality by Alkaline Potassium Persulfate Digestion Ultraviolet Spectrophotometry Law HJ 636-2012 |
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| 40 | Kjeldahl nitrogen | United States <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 4500-Norg B Constant Chieda Gas Method / 4500-Norg B | — | ||
| 41 | total phosphorus | United States <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 4500-PE Vitamin C Method / 4500-PE | — | ||
| 42 | total phosphorus |
Marine Survey Specifications Part 4: Survey of Chemical Elements of Seawater - Potassium Persulfate Oxidation Method GB/T12763.4-2007 14 |
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| 43 | Orthophosphate | United States <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 4500-PE Vitamin C Method / 4500-PE | — | ||
| 44 | anionic surfactant | American <<Standard Test Method for Water and Wastewater>> (22 edition, 2012) 5540 C Methylene blue spectrophotometry/5540 C | — | ||
| 45 | Anionic detergent | Marine Monitoring Specification Part 4: Seawater Analysis GB 17378.4-2007 23 | — | ||
| 46 | Sulfate | United States <<Standard Test Method for Water and Wastewater>> (22nd Edition, 2012) 4500-SO 4 2 E Turbidity method / 45-SO42 E | — | ||
| 47 | Nitrate nitrogen |
Standard test method for drinking water 5.1 Musmolol spectrophotometry GB/T 5750.5-2006 5.1 |
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| 48 | water temperature |
Determination of water temperature GB/T 13195-1991 |
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| 49 | water temperature |
Marine Monitoring Code Part 4: Seawater Analysis 25.1 Surface Thermometer Method GB 17378.4-2007 25.1 |
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| 50 | dissolved oxygen |
Determination of dissolved oxygen in water by electrochemical probe method HJ 506-2009 |
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| 51 | Active Silicate |
Marine Monitoring Code Part 4: Seawater Analysis 17.1 Silicon Molybdenum Yellow Method GB 17378.4-2007 17.1 |
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| 52 | Inorganic Phosphorus |
Marine Monitoring Code Part 4: Seawater Analysis 39.1 Phosphomolybdenum Blue Spectrophotometry GB 17378.4-2007 39.1 |
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| 53 | nitrite |
Marine Monitoring Specification Part 4: Analysis of Seawater (GB17378.4-2007) 37 Naphthalene Ethylene Diamine Spectrophotometry Law GB 17378.4-2007 37 |
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| 54 | ammonia |
Marine Monitoring Code Part 4: Seawater Analysis 36.1 Indophenol Blue Spectrophotometry GB 17378.4-2007 36.1 |
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| 55 | salinity |
Marine Monitoring Code Part 4: Seawater Analysis 29.1 Salinometer Method GB 17378.4-2007 29.1 |
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