Technical Indicators:

Analysis parameter: Total phosphorus
Measurement principle: Acidic persulfate digestion ammonium molybdate spectrophotometric method
Measurement range: 0-0.5/1.0/5/10/100mg/L, with more range options available
Repeatability:<2%
Accuracy:<± 3% or 0.01 mg/L, whichever is greater
Detection limit: 0.005 mg/L (minimum range)
Zero drift:<1% FS/24h
Range drift:<1% FS/24h
Measurement time: 28 minutes
Resolution: 0.001mg/L

Analysis parameter: Total nitrogen
Measurement principle: alkaline persulfate digestion UV spectrophotometry
Measurement range: 0-1.0/2.0/5.0/10/50/200 mg/l, with more range options available
Repeatability:<2%
Accuracy:<± 3% or 0.03 mg/L, whichever is greater
Detection limit: 0.03mg/L (minimum range)
Zero drift:<1% FS/24h
Range drift:<1% FS/24h
Measurement time: 21 minutes
Resolution: 0.01mg/L

Analysis parameters: Ammonia nitrogen
Measurement principle: Salicylic acid spectrophotometric method
Measurement range: 0-0.5/1.0/2.0/5.0/10/200mg/l, with more range options available
Repeatability:<2%
Accuracy:<± 3% or 0.01 mg/L, whichever is greater
Detection limit: 0.01mg/L (minimum range)
Zero drift:<1% FS/24h
Range drift:<1% FS/24h
Measurement time: 15 minutes
Resolution: 0.01mg/L

Analysis parameter: COD
Measurement principle: UV spectrophotometry
Measurement range: 0-10/100/1000mg/l, with more range options available
Repeatability:<2%
Accuracy:<± 5% or 1mg/L, whichever is greater
Detection limit: 1mg/L (minimum range)
Zero drift:<1% FS/24h
Range drift:<1% FS/24h
Measurement time: 3 minutes
Resolution: 0.1mg/L