Phase II evaluations consist of symptom-specific examinations, additional laboratory tests, and specialty consultations according to the prescribed protocol. Toxicological profile for Cyclosarin. U.S. Department of Health and Human Services, Public Health Service. Detection Paper Detection paper is based on certain dyes being soluble in chemical warfare agents. When a drop of chemical warfare agent is absorbed by the paper, it dissolves one of the pigments.
Mustard agent dissolves a red dye and nerve agent a yellow.
Detection paper can thus be used to distinguish between three different types of chemical warfare agents. A disadvantage with the papers is that many other substances can also dissolve the pigments. Consequently, they should not be located in places where drops of, e.g., solvent, fat, oil or fuel can fall on them. Drops of water give no reaction. On the basis of spot diameter and density on the detection paper, it is possible to obtain an opinion on the original size of the droplets and the degree of contamination.