The ASTM D 4490 standard, developed by the American Society for Testing and Materials (ASTM), provides a method for determining the number of active substances. A list of the active substances to be identified by this method is included in the standard's appendix. The main active substances covered by the standard are: amines, ammonia, acetone, benzene, butane, diesel fuel and jet fuel, ethanol, phenol, formaldehyde, phosphines, gasoline, hydrogen fluoride, hydrogen chloride, hydrogen cyanide, hydrogen sulfide, hydrocarbons, carbon dioxide, carbon monoxide, chlorine dioxide, chloride, sulfur dioxide, methyl ethyl ketone, mercaptans, methyl bromide, nitrogen dioxide, nitrogen oxides, ozone, water vapor, toluene, trichloroethylene, vinyl chloride, and xylenes.
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The full name of this standard is: ASTM D4490-96 (2016) Standard practice for measuring the concentration of toxic gases or vapors using detector tubes.
Active substances are components of pharmaceutical and agricultural chemicals that express therapeutic, medicinal or biochemical effects on living substances. Agrochemicals specifically include pesticides, herbicides and insecticides.
The way to determine the viability and efficacy of an active ingredient is to understand its biological activity. The degree of biological activity generally depends on the dosage concentration.
In the test, analysis, measurement and evaluation studies carried out in our organization, national and international standards and applicable legal regulations are complied with and reliable and impartial results are obtained. These studies are based on the latest technological equipment, trained and experienced staff and modern methods. Among the numerous tests performed in this context, there are also active ingredient determination (ASTM D 4490) services.
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