Spectroquant®BOD Cell Test photometric 0.5 – 3000 mg/l [50 Tests]

Description

Method
The dissolved oxygen oxidizes manganese(II) to manganese(III). In acidic solution, this reacts with Titriplex® II to form a red complex that is deter- mined photometrically (modified Winkler method). The BODn is calculated as the difference between the oxygen concentration determined immediately after sampling and that after n days of incubation of a water sample to which allyl thiourea has been added to inhibit nitrification.

 Applications
Sample material:
Communal and industrial wastewater

Influence of foreign substances
The determination may be interfered with by substances that are toxic for microorganisms. Among these are certain metals such as e. g. chromium and copper and also free halogens and bactericides. Peroxides and reducing agents such as sulfite or Fe2+ also yield false-low results.

Safety Information according to GHS
Hazard Pictogram(s)
Precautionary Statement(s)	P273: Avoid release to the environment. P280: Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word	Danger
Storage class	8B Non-combustible, corrosive hazardous materials

Safety Information
Hazard Symbols	Corrosive