Features
The unique high-precision filter system makes the instrument more stable and accurate.
No blank calibration, automatic measurement, direct reading of concentration. 
With built-in standard curve. Users can setup curves according to different measurement requirements.
Support zero point and up to 7-point calibration. Support calibration restoring function to restore factory calibration data.
Can store 5000 sets of test data.

Parameter
Display    3-inch color screen
Accuracy    ≤5%
Repeatability    ≤5%
Optical Stability    ≤0.001A/10min
Remarks    Rechargable battery can last for 10hours. Auto power-off time can be set.
Testing items    Measuring Range    Measurement Method
COD    10-1000mg/L    Rapid digestion spectrophotometry
Ammonia Nitrogen    0.01-100mg/L    Nessler's reagent spectrophotometry
Phosphorus, Total    0.01-15mg/L    Ammonium molybdate spectrophotometry
Nitrogen, Total    0-10mg/L    Alkaline potassium persulfate digestion ultraviolet spectrophotometry
Suspended Solids    0-100,100-1000,1000-4000mg/L    Direct colorimetric method
Chlorine, Free    0-15mg/L    DPD spectrophotometry
Chlorine, Total    0-30mg/L    DPD spectrophotometry
Chlorine Dioxide    0.05-30mg/L    DPD spectrophotometry
Air Formaldehyde    0.05-1.5mg/m3    Acetylacetone spectrophotometry
Formaldehyde in Water    0.05-10mg/L    Acetylacetone spectrophotometry
Textile formaldehyde    0.2-30mg/kg    Acetylacetone spectrophotometry
Turbidity    0-1000 NTU    90°scattering method
Chroma    0.001-500 PCU    Platinum-Cobalt Colorimetry
Beer Chroma    0-50 EBC    Photoelectric colorimetry
Heavy metal
Hexavalent Chromium    0-10mg/L    Spectrophotometry
Nitrite    0-0.2mg/L    Spectrophotometry
Nitrite nitrogen    0.5-1.0mg/L    Spectrophotometry
nitrate nitrogen    0.5-10mg/L    Phenol disulfonic acid spectrophotometry
Nitrate    0.5-10mg/L    Phenol disulfonic acid spectrophotometry
Permanganate Index    0.2-10.0mg/L    Potassium pemmanganate oxidation spectrophotometry
Sulfate    5-100mg/L    Barium chromate spectrophotometry
Phosphate    0.05-20mg/L    Ammonium molybdate spectrophotometry
lron lon    0.05-3mg/L    Spectrophotometry
Copper lon    0.05-3mg/L    Spectrophotometry
Lead    0.05-4.00mg/L    Spectrophotometry
Cyanide    0.0-1.0mg/L    Spectrophotometry
Arsenic    0.05-3.00mg/L    Spectrophotometry
aluminium    0.0-1.0mg/L    Spectrophotometry
Zinc    0.01-5.0mg/L    Spectrophotometry
Manganese    0.05-5.0mg/L    Spectrophotometry
Cadmium    0-1mg/L    Spectrophotometry
Nickel    0.05-5mg/L    Spectrophotometry
Sulfide    0.0-1.0mg/L    Methylene blue spectrophotometry
Volatile Phenol    0.1-3.0mg/L    Spectrophotometry
chloride    0.0-5.0mg/L    Spectrophotometry
Fluoride    0.0-2.0mg/L    Spectrophotometry
Water Hardness    0-50mg/L    Spectrophotometry