Haijing COD rapid detection package 0-5-10-13-20-50-100mg/L industrial wastewater sewage sub-box postage

Haijing total nitrogen TN test paper 2-5-10-25-50-100mg/L100 times industrial wastewater river sewage

Haijing total alkalinity test paper 0-40-80-120-180-240-400mg/L100 times/box postage

Haijing nitrite test paper 0-1-5-10-20-40-80-120mg/L100 boxes of aquaculture wastewater

Haijing Sulfate Test Paper 200-400-800-1200-1600mg/L100 Postage Sulfate

Haijing total iron test paper 0-2-5-10-25-50-100-250-500mg/L100 times/box heavy metal

Haijing ammonia nitrogen test paper 0-2-5-10-30-50-70-100mg/L100 times to test sewage rainwater wells

Haijing nitrate test paper 0-1-5-10-25-50-100-250-500mg/L100 times/box postage

Haijing total phosphorus rapid detection package is calculated as p: 0.02-0.05-0.1-0.2-0.5-1mg/L phosphate salt

Haijing total nitrogen TN rapid detection package 0-5-10-25-50-100mg/L50 times colorimetric tube test kit

Haijing total phosphorus rapid detection package (calculated as PO4: 2-5-10-20-50-100mg/L) phosphate salt

Haijing Ammonia Nitrogen Rapid Test Kit 0.5-1-2-5-10-20mg/L50 Colorimetric Tube Test Kit

Haijing ammonia nitrogen rapid detection package 0-0.2-0.5-1-2-5-10mg/L50 times colorimetric tube test kit

Haijing COD Rapid Detection Package 0-10-100-500-1000-2000-10000mg/L100 Times Box Postage

Haijing COD rapid detection package 0-30-60-120-200-250mg/L industrial wastewater discharge port detection

Haijing Ammonia Nitrogen Rapid Test Kit 0.5-1-2-5-10-20mg/L50 Colorimetric Tube Test Kit

Haijing COD rapid detection package 0-2-4-6-8mg/L surface water groundwater drinking water COD rapid detection

Haijing total phosphorus rapid detection package (in terms of p: 0.1-0.2-0.5-1-2-5mg/L) phosphate salt

Haijing COD Rapid Detection Package 0-10-100-300-500-800-1000mg/L50 Times Box Postage

Haijing total chlorine test paper 0-0.1-0.5-1-3-5-10mg/L100 times/box total residual chlorine of postage sewage

Haijing sulfite test paper 0-10-25-50-100-250-500-1000mg/L100 times/box

Haijing hydrogen peroxide test paper 0-0.5-1-2-4-10-25mg/L100 times \box

Haijing soft water hardness test paper 0-5-10-20-50mg/LL100 times/box dialysis soft water boiler water

Haijing total phosphorus TP test paper is calculated as p: 0-0.5-1-3-5-10-20mg/L100 times/box postage

Haijing nickel test paper 0-5-10-25-50-100-250-500-1000mg/L100 times/box postage

Haijing total hardness test paper 0-50-120-180-250-425-1000mg/L100 times/box

Haijing soft water hardness test paper 0-10-20-50-120mg/LL100 times/box of industrial boiler soft water

Haijing copper test paper 0-5-10-30-100-300mg/L100 times/box postage heavy metal detection

Haijing phosphate test paper is calculated as p: 0-1-5-20-35-50-70-100mg/L00 times

Haijing hydrogen peroxide test paper 0-1-3-10-30-100mg/L100 times \box bleaching residue test

Haijing ammonia nitrogen test paper 0-5-10-25-50-100-200-400mg/L100 times to measure domestic sewage

Haijing hexavalent chromium test paper 0-0.5-2-5-10-30-50-100mg/L00 times box heavy metal detection

Haijing ammonia nitrogen test paper 0-10-20-40-60-100-250-500-1000mg/L100 times \box

Haijing quaternary ammonium salt test paper 25-50-100-250-500-1000mg/L100 times/box postage

Haijing chlorine dioxide test paper 0-0.5-1-2-5-10-20mg/L100 times/box residual concentration test

Haijing ammonia nitrogen test paper 0-0.5-1-2-5-10-20mg/L100 times test kit for sewage