v Introduction to product development background:

Soil organic matter refers to the substances in the soil that come from life. Soil organic matter is an important component of the solid phase of the soil and one of the main sources of plant nutrition. It can promote the growth and development of plants, improve the physical properties of the soil, promote the activities of microorganisms and soil organisms, promote the decomposition of nutrients in the soil, and improve the soil's fertility retention and buffering properties.

Detection of soil organic matter content is an important indicator for measuring soil fertility, and one of the main tasks. It also has certain guiding significance for understanding soil fertility status, fertilizing and improving soil.

v Reference national standard:

v Scope of application:

Suitable for digestion and pretreatment of soil samples with organic matter content lower than 15%or digestion treatment of various food, pharmaceutical, agricultural and other samples.

v Operation principle:

Under heating conditions, use excess potassium dichromate - sulfuric acid solution to oxidize soil organic carbon. The excess potassium dichromate is titrated with ferrous sulfate standard solution. The amount of organic carbon is calculated from the amount of potassium dichromate consumed according to the oxidation correction coefficient, and then multiplied by the constant 1.724, which is the soil organic matter content.

Soil organic matter digester

Automatic zeroing burette

Thermometer (300℃)

Soil organic matter digester

Automatic zeroing burette

Thermometer (300℃)

v Operation steps: