This document provides instructions and features of the Hanna Hardness Test Kit. The kit can measure the levels of calcium, magnesium, iron, zinc, and manganese ions in water, helping to control water hardness and prevent scaling and clogging.
This document is the instruction manual for the Hanna Instruments HI 3812 Hardness Test Kit. It lists the contents of the kit, including hardness buffer, Calmagite indicator, EDTA solution, and plastic beakers. The manual explains that water hardness is a quantitative measure of calcium and magnesium ions in water samples.
| Range (High) | 0 to 300 mg/L (ppm) CaCO3 |
|---|---|
| Range (Low) | 0.10 to 30.0 mg/L (ppm) CaCO3 |
| Smallest Increment (High) | 3 mg/L |
| Smallest Increment (Low) | 0.3 mg/L |
The kit measures a high range of 0 to 300 mg/L (ppm) CaCO3 and a low range of 0.0 to 30.0 mg/L CaCO3.
The smallest increment is 0.3 mg/L when testing within the 0-30 mg/L range.
You must fill the small plastic beaker to the 5 mL mark for the high-range analysis.