This is the instruction manual for the HI 38083 soil pH tester
This document is the instruction manual for the Hanna Instruments HI 38083 Gypsum Requirement and Exchangeable Sodium Test Kit. It outlines the contents of the kit, including reagents like Calcium Sulfate, EDTA Solution, and Calmagite Indicator, as well as necessary equipment such as test tubes, sieves, and calibrated vessels.
The manual provides step-by-step instructions for soil sampling, extraction using the saturated calcium sulfate method, and the titration process to determine gypsum requirement. It includes specific formulas for calculating Gypsum Requirement (GR) and Estimated Exchangeable Sodium (EES) based on the number of drops of EDTA solution added.
| Range | 0 to 213 metric ton/ha (0 to 96 ton/acre) |
|---|---|
| Smallest Increment | 3.8 metric ton/ha (1.7 ton/acre) |
| Analysis Method | Drop count titration |
| Sample Size | 0.5 mL of soil |
| Number of Tests | 100 |
| Case Dimensions | 235x175x116 mm (9.2x6.9x4.5") |
| Shipping Weight | 883 g (31.1 oz) |
The analysis method is drop count titration.
GR (meq/100 g of soil) is calculated by multiplying 6 by the number of drops added.