REAGENT FOR ANALYSIS

摘要

A single DPD reagent whereby the DPD and optionally other chemicals is dissolved in a concentrated phosphate buffer to produce a desired pH, wherein the phosphate buffer includes mono-hydrogen phosphate and di-hydrogen phosphate wherein the concentration of mono-hydrogen phosphate exceeds 0.34 mole per litre, and the concentration of di-hydrogen phosphate exceeds 0.68 mole per litre, and wherein surface contact of said reagent with air is prevented by said storage means. The solution may contain a glycerol water mixture and include additional agents such as EDTA, sodium citrate, sodium sulfate and Sorbitol. Optionally the reagent may be stored in a storage container that reduces contact with air.