Laboratory Test Request

Leonardite and Humic Acid Extract Testing

Project Description

CANADA LABORATORY
MULTIPLE TESTING
Canada Environmental Laboratory needed to measure the quantity of Humic Substances (HAs) and Fulvic acids extracted from leonardite and from humic acid extract including the following:

Determine the level of potassium hydroxide used as extractant in humic acid extract. Note: According the Canadian Organic Production Systems Permitted Substances Lists; potassium hydroxide levels used in the extraction process shall not exceed the amount required for extraction.

Test the Levels (mg/kg) of arsenic, cadmium, chromium, lead and mercury. They shall not exceed the limits (category C1) specified in Guidelines for the Beneficial Use of Fertilizing Residuals. Shall not cause a build-up of heavy metals or micronutrients in soil. Samples can be sent to a commercial soil laboratory. 4D labs will provide the summary of the results.

Project Information

Number:22-02071

Industry:Environment

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