This document provides instructions for using the Hanna test kit and information on the accessories included. It also discusses the nature of silicon and its range of content in water.
The document is an instruction manual for the Hanna Instruments HI 38066 Silica Low Range Test Kit. It lists the included components such as silica reagents (HI 93705A-0, B-0, G-0), a checker disc, glass vials, and a plastic pipette. The kit is designed to measure silica concentration in water samples ranging from 0 to 1.0 mg/L using the Heteropoly Blue Method.
| Range | 0 to 1.0 mg/L (ppm) as SiO2 |
|---|---|
| Smallest Increment | 0.02 mg/L (ppm) |
| Analysis Method | Colorimetric |
| Sample Size | 20 mL |
| Number of Tests | 100 |
The determination of silica concentration uses an adaptation of the ASTM D859 method of the heteropoly blue method.
Interferences include phosphate above 50 ppm, sulfide, high dissolved salts concentration, and high concentration of iron.