DIN EN 13656 : 2021 Title: Soil, treated biowaste, sludge and waste - Digestion with a hydrochloric (HCl), nitric (HNO<(Index)3>) and tetrafluoroboric (HBF<(Index)4>) or hydrofluoric (HF) acid mixture for subsequent determination of elements Year: 2021 Publisher: DIN Media GmbH Availability: Within 1-2 working days