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STH Series Soil Testing Outfits

Colorimetric test methods are used for most test factors. Tests for calcium, sulfate and chlorides are based on turbidity measurements. Potassium analysis also employs a turbidity measurement, using a unique reading device to read directly in pounds per acre. 

A single extraction procedure, using Morgan Universal Extraction Solution, provides the liquid soil extract for all the nutrient tests with the exception of chloride, which is extracted with demineralized water.
 

Each kit includes complete instructions, a soil management handbook and a pad of soil analysis report forms. 

Four combination outfits are available in the STH series - STH-4, STH-5, STH-7 and STH-14, differing in the number of parameters tested.




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Specifications 

pH
pH 3.8-9.6
100 Tests
pH
pH 3.8-9.6
100 Tests
pH
pH 3.8-9.6
100 Tests
pH
pH 3.8-9.6
100 Tests
Nitrate Nitrogen
10-150 lbs/acre
50 Tests
Nitrate Nitrogen
10-150 lbs/acre
50 Tests
Nitrate Nitrogen
10-150 lbs/acre
50 Tests
Nitrate Nitrogen
10-150 lbs/acre
50 Tests
Phosphorus**
10-200 lbs/acre
50 Tests
Phosphorus**
10-200 lbs/acre
50 Tests
Phosphorus**
10-200 lbs/acre
50 Tests
Phosphorus**
10-200 lbs/acre
50 Tests
Potassium
100-400 lbs/acre
50 Tests
Potassium
100-400 lbs/acre
50 Tests
Potassium
100-400 lbs/acre
50 Tests
Potassium
100-400 lbs/acre
50 Tests
  Humus (Organic Matter)
L-H 1.5%-8%
50 Tests
Humus (Organic Matter)
L-H 1.5%-8%
50 Tests
Humus (Organic Matter)
L-H 1.5%-8%
50 Tests
    Calcium
150-2800 ppm
50 Tests
Calcium
150-2800 ppm
50 Tests
    Magnesium
L-H 5-150 ppm
50 Tests
Magnesium
L-H 5-150 ppm
50 Tests
      Aluminum
L-H 5-125 ppm
50 Tests
      Nitrite Nitrogen
1-50 ppm
50 Tests
      Sulfate
50-2000 ppm
50 Tests
      Chloride
25-500 ppm
50 Tests
      Ferric Iron
5-125 lbs/acre
50 Tests

 

**For non-alkaline soils. Phosphorus Auxilliary package recommended for alkaline soils