The extractable/leachable metal content refers to metals soluble in a hot mixture of nitric and hydrochloric acids using methods based on ISO11466 (1995).Certified valuesAs. 24.0 mg/kgHg .1.4 mg/kgSn. 6.8 mg/kgCd .2.7 mg/kgMn.1240 mg/kgV. 38.3 mg/kgCr . 8