This document is an instruction manual that describes the features and methods of using Hanna products. The product mentioned in the document is the HI 3874 Nitrate Test Kit, which is used to measure nitrate levels from 0 to 50 mg/L using a colorimetric analysis method. The user needs to fill the glass cuvet with the sample, add the nitrate reagent, and shake it for 1 minute. The product provides accurate test results and is easy to use.
The document provides instructions for using the Hanna Instruments HI 3874 Nitrate Test Kit. It specifies that the kit uses a colorimetric analysis method with a range of 0 to 50 mg/L (ppm) as NO3-N and includes 100 tests per case.
The manual outlines the chemical reaction where nitrates are reduced to nitrites in the presence of Cadmium, producing an orange compound. It details the step-by-step procedure for filling a glass cuvet with sample, adding reagent, shaking, waiting for color development, and comparing the result against a color comparator cube.
| Range | 0 to 50 mg/L (ppm) as NO3-N |
|---|---|
| Smallest Increment | 10 mg/L (ppm) NO3-N |
| Analysis Method | Colorimetric |
| Sample Size | 10 ml |
| Number of Tests | 100 |
Multiply the reading by a factor of 4.43.
Nitrate ions are present in trace amounts in surface water and higher levels in some groundwater.