LaMotte STH-14 Test Kit View larger

LaMotte STH-14 Test Kit


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LaMotte STH-14 combination soil analysis kit offers the finest visual color matching system available to today's agronomist. 

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Description: This line of combination soil analysis outfits offers the finest visual color matching system available to today's agronomist. The Model STH Combination Soil Outfits have offered simplified methods for determination of available nutrients found in agricultural soils for over forty years. Since the original introduction of the STH series, based on Morgan soil test methods, reagent systems have been updated constantly with new advancements in modern chemistry. A series of rapid, accurate chemical tests use standardized reagents to produce color reactions measured against laminated color charts.

All 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.

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.

STH-14 Specifications:

Test Factor - Range - # 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) 1-1/2%-8% - 50 Tests

Calcium - 150-2800 ppm - 50 Tests

Magnesium - (L-H) 5-150 ppm - 50 Tests

Ammonia Nitrogen - (L-H) 5-150 ppm - 50 Tests

Manganese - (L-H) 4-40 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

*NOTE: This item contains hazardous materials and will be drop-shipped by the manufacturer. It cannot be shipped overseas or outside of the continental US. This kit will also be subject to a small hazardous shipping fee of $8.00. This kit is practically identical to the one that Dr. Carey Reams would have used.