NANOCOLOR® COD 4000, REF 985 011

NANOCOLOR® COD 4000 Photometric determination of the COD Photometric determination of decrease in chromate concentration after oxidation with potassium dichromate/ sulphuric acid/ silver sulphate Reaction basis according to ISO 6060 ISO method: The chemical oxygen demand of water is determined by silver-catalyzed oxidation with potassium dichromate / sulfuric acid at 148 ° C during a two hour period. Data and ordering information REF 985 011 Type tube test 0-11 Range 400 - 4000 mg/ L O2 Sufficient for 20 determinations Shelf life at least 1 year Sea water suitability no Benefits of NANOCOLOR® tube tests in comparison to ISO 6060: • Five times less mercury • Comparably less other toxic and hazardous reagents • All reagents are pre-dosed in round tubes • Reduced risks for the user • Reproducible results because of photometric determination If the chloride content exceeds 1500 mg/ L the sample has to be diluted with COD-free water, or you may use the chloride complexing agent. Lower chloride concentrations are masked by the mercury( II) sulfate present in the test tubes. COD accesories: Chloride complexing agent REF 918 911 for COD determinations with chloride concentrations from 1000– 7000 mg/ L Cl– Sufficient for: Shelf life: 100-200 tests at least 1.5 years Cartridges for chloride elimination REF 963 911 for removal of up to 2000 mg/ L Cl– per cartridge Pack of: Shelf life: 10 cartridges at least 1 year at 2– 8 ° C COD-free water REF 918 993 for control of measurements and dilution of water samples