Sentence examples for a classification of substances from inspiring English sources

A short-time exposure on the concentration--time relationship base, a classification of substances according to the degree of hazard and the program for assessing safety coefficients have been suggested in order to predict the basic toxicometric parameters (chronic exposure thresholds, maximum allowable concentrations, safety coefficients, and others).

Plant biostimulants, sometimes referred to as agricultural biostimulants, are a diverse classification of substances that can be added to the environment around a plant and have positive effects on plant growth and nutrition, but also on abiotic and biotic stress tolerance.

Because of the transition from the old to the new classification, at the moment, PCs can be confronted in the SDS ingredients list with a double classification of substances.

It might come as a surprise for the biology reader, but it is in this context of classification of substances that concepts such as genera and species first appeared (Wilkins 2009).

The members of the ACMD makes recommendations to ministers on issues including the classification of substances under the Misuse of Drugs Act 1971.

Water hazard classes are based on the German General Administrative Regulation under the Federal Water Act on the Classification of Substances Hazardous to Water in Water Hazard Classes.

However, this is the first analysis of the composition and legal classification of substances, sold under the banner of research chemicals, to be carried out within the past 12 months.

Substances classified as 'May cause respiratory irritation.' were present, but only the sum of these ingredients would have led to a classification of the mixture, not the single substances.

For a classification of snakes, see snake.

In medieval textbooks, the "Porphyrian Tree" illustrated his logical classification of substance.

Comparison of the values with respective criteria defined in the REACH regulation for persistence (P) and bioaccumulation potential (B) leads to a first classification of all substances according to vP, P, vB and B. Thus, the 1,022 substances can be classified into 8 substances (0.8%) which are vPvB (sub-category (1)) and thus SVHC, and 1,014 compounds which are not vPvB (Figure 1).