Model STH-5 - Soil Testing Outfit

Order Code

The STH outfits are furnished in lightweight carrying cases with components securely mounted in removable foam trays. This format provides flexibility for the in-house specialist who also wants to make quick problem determinations in the field.

In stock

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 designed in LaMotte laboratories 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. The Humus Screening Test, performed on a soil sample-demineralized water suspension, employs five color standards for rapid measurement of humus content of the soil.

Soil pH is determined colorimetrically, using a series of pH indicators and color charts covering the range of pH 3.8 to 9.6. The STH outfits also include simplified procedures for screening nitrates, phosphorus, and potassium in plant tissues. Complete reagent refill packages are available for each STH outfit.

Each kit includes complete instructions, a soil management handbook and a pad of soil analysis report forms. The LaMotte Soil Handbook contains general information on interpretation of test results for determination of lime and fertilizer requirements.

Test Factor Range # of Tests
pH pH 3.8-9.6 100 Tests
Nitrate Nitrogen 10-150 lbs/acre 50 Tests
Phosphorus 10-200 lbs/acre 50 Tests
Potassium 100-400 lbs/acre 50 Tests
Humus (Organic Matter) L-H 1.5%-8% 50 Tests

Ship Code: (LQ) Hazardous Material - Air Fees Applicable

Ship Weight in lbs.: 12

Item Description Order Code
Model STH-5 - Soil Testing Outfit Reagent Refill R-5007
Instructions (417.53 kB)