Skin sensitization test of the PM was conducted according to the Test Guideline (TG) No. 406:
Skin Sensitization (Buehler Method) of the OECD Guidelines for Testing of Chemicals (1992). Forty guinea pigs (20 of each sex) were employed and acclimatized to the laboratory environment Skin sensitization test of the PM was conducted according to the Test Guideline (TG) No. 406: Skin Sensitization (Buehler Method) of the OECD Guidelines for Testing of Chemicals (1992).10 Forty guinea pigs (20 of each sex) were employed and acclimatized to the laboratory environment for one week. One