HI-3854-100 – 100 replacement reagents for the HI-3854 Zinc test kit
- Range: 0.0-3.0 mg/L.
- Reagent kit for 100 tests (zinc)
The HI-3854-100 are high quality reagents that are pre-measured, allowing for users to achieve fast and accurate zinc measurements with the chemical test kit. These reagents follow an adaptation of the zincon method to determine zinc concentration.
For determination of zinc, a reaction with the zincon reagent to form a brownish- green to blue complex occurs in a solution buffered at alkaline pH. Since other metals can form coloured complexes with zincon, cyanide is added to complex zinc and any other heavy metal present. Then, cyclohexanone is added to selectively free zinc from its cyanide complex so that it can react with zincon to form the final blue coloured product. The amount of colour developed is proportional to the concentration of zinc present in the aqueous sample. When one packet of the HI-3854A reagent is first added and mixed and then 0.5mL HI-93731B reagent is added and mixed for 15 seconds, after a 3.5 minute reaction time, the reaction between zinc and the reagent causes the blue coloured complex to form; the greater the concentration, the deeper the colour. These reagents are designed to be used with samples that have an expected range of 0.0 to 3.0 mg/L (ppm) zinc.