กระดาษและผลิตภัณฑ์กระดาษ
เอกสารมาตรฐาน
สหราชอาณาจักร
BSI
BS ISO 6350:2024
Lignins — Determination of dry matter content — Oven-drying and freeze-drying methods
2024
18
BSOL 2024 online
This document describes methods for the determination of the dry matter content of lignins by oven-drying and freeze-drying. The methods are applicable to all types of lignins isolated from kraft, organosolv, soda, and sulfite pulping processes, and to lignin obtained by enzymatic or acid hydrolysis of biomass. However, the oven-drying method is not applicable to kraft lignins in the base form, also referred to as sodium form. Both methods are applicable only to lignins in the solid form.