Yellow-Green Fluorescent ECO Penetrant 4814 – Type I – is a water or solvent-washable, almost odourless fluorescent penetrant. Sensitivity level 4 (type I, method A and C). Sulfur and halogen content: complies with the requirements of EN ISO 3452:2014. Also complies with the requirements of EN ISO 3452:2014, ASTM E-165 and ASTM D-516.