Compliant with the latest national HJ/T399-2007 environmental protection industry standards; Quickly and accurately measure the four indicators of COD, ammonia nitrogen, total phosphorus, and total nitrogen in water quality;
Water quality - Determination of chemical oxygen demand - Dichromate method GB/T11914-1989 Rapid digestion spectrophotometric method HJ/T399-2007 "Monitoring and analysis methods for water and wastewater" (Fourth edition)
Water quality - Determination of ammonium content - Nessler's reagent colorimetric method GB/T7479-1987
Water quality - Determination of total phosphorus - Ammonium molybdate spectrophotometric method GB/T11893-1989
Water quality - Determination of total nitrogen - Ultraviolet spectrophotometric method GB/T11894-1989
Fully equipped: digestion apparatus (12 wells), test tube rack, reagents, open and sealed test tubes, quartz and glass colorimetric dishes, semi-automatic quantitative analyzer, certificate of conformity, etc

Main functions:

Large screen LCD, Chinese display, one click guided menu operation

Tungsten lamp and deuterium lamp independent control system, deuterium lamp independent power switch, extending the service life of deuterium lamp

The digestion safety protection device is made of fully transparent, heat-resistant, acid and alkali resistant materials, with strong intuitiveness, humanized safety and reliable operation

Built in standard curve, supports automatic calculation using national standard samples and establishes standard curves

UV spectrophotometer function

Data direct reading, built-in micro thermal printer

model:
6B-1800 type
6B-2000 type

6B-1800 typeMain technical parameters：

Measurement range: COD: 3-1000mg/L (dilution measurement beyond the range)
Ammonia nitrogen: 0.01-20mg/L (measured by dilution beyond the range)
Total nitrogen: 0.01-20mg/L (measured by dilution beyond the range)
Total phosphorus: 0.01-10mg/L (measured by dilution beyond the range)

Measurement error: ≤ 5%

Dissolving temperature: COD 165 ℃ Total phosphorus 122 ℃ Total nitrogen 122 ℃

Temperature control range: Room temperature -200 ℃

Temperature control error: ± 1 ℃

Dissolving time: COD 10 minutes, total phosphorus 30 minutes, total nitrogen 30 minutes

Batch processing samples: 12 samples per batch

Anti chloride ion interference: Conventional reagent [Cl -] ≤ 1200mg/L

Anti high chlorine reagent [Cl -] ≤ 12000mg/L

Wavelength range: 190-1020 nm

Wavelength error: ± 1nm

Number of curves: 100

Data storage: 2000 units

Power supply: 220V/50Hz