Soil Physical and Chemical Testing

Inquiry

Soil physical and chemical properties are usually considered important indicators for quality assessment. Soil moisture, capacity, and pore space are important soil physical factors that influence the water holding and dissolved mineral elements properties of the soil, the rooting and root absorption properties of plants, which in turn affect the soil fertility status and plant growth.

Soil chemical properties and processes are some of the most important factors affecting soil fertility levels. In addition to soil acidity and redox properties that have a direct effect on plant growth, soil chemical properties mainly affect plant growth indirectly through interventions on soil structural conditions and nutrient status.

Lifeasible provides a one-stop physical and chemical testing platform that frees researchers from the tedious pre-processing work. The customer only needs to provide the original sample, and the subsequent pre-treatment such as grinding and sieving of the soil sample, physicochemical index testing, and data analysis are all done by us. During the process, we strictly follow the standards, process and test the samples, and finally provide accurate test results.

Detectable items

Methods for testing physical and chemical properties of soils

Determination of the total amount of soil reducing substances
Chemical morphology analysis of soil elements
Measurement of pH, EC (electrical conductivity), etc.
Measurement of soil loss by burning
Soil particle size analysis/mechanical composition analysis
Measurement of soil density (bulk density)
Maximum/minimum water holding capacity, capillary water holding capacity
Analysis of non-capillary/capillary voids and total voids
Soil aeration measurement
Measurement of the lower limit of optimum water content
Determination of drainage capacity
Measurement of reasonable irrigation quota
Measurement of soil gas phase composition, including O₂, CO₂, H₂S, CH₄, etc.

Densitometry method
Ring knife method
Drying method
Potentiometric (potentiometric titration) method
Neutralization titration method
Electrical conductivity method
Weight method
Atomic absorption spectrophotometry method
Start distillation method
Polar spectrometry

General process

Determination of soil quality indicators such as chemical and physical indicators, including but not limited to soil cohesion, bulk weight, water-stable agglomerates, pH, soil thickness, etc., as detailed in the list above.
The affiliation degree is calculated based on the affiliation function of soil quality indicators, and the mathematical expression of the relationship between the evaluation indicators and the crop growth effect curve is the affiliation degree function.
Determine the weight value of indicators by factor analysis and make factor analysis with eigenvalue > 1 as the condition of selecting principal factors to get the eigenvalue and contribution rate of each quality factor principal component and calculate the common factor variance and weight value of soil quality indicators by factor loading matrix.
Calculate the comprehensive evaluation index value of soil quality and use the special formula to find the comprehensive evaluation value of soil physical and chemical indexes according to the principle of additive multiplication in fuzzy mathematics.

Application areas

Soil structure improvement
Soil biological activity and crop growth research
Soil moisture monitoring and movement simulation
Transport of contaminants and colloids in soils

Lifeasible's soil physical and chemical testing services combine a variety of methods for different research directions, and we have a dedicated team to provide customized solutions to ensure that our clients' needs are met. If you are interested in any of these services or customized solutions, please contact our staff and we will provide you with the latest information.

For research or industrial raw materials, not for personal medical use!

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