This standard specifies determination method of pH value and difference figure for leather aqueous extract.
This standard is applicable to various leathers.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigendum), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 6682-1992 Water for Laboratory Use; Specifications
QB/T 2706-2005 Leather - Chemical Physical and Mechanical and Fastness Tests - Sampling Location
QB/T 2716-2005 Leather - Preparation of Chemical Test Samples (ISO 4044: 1977, MOD)
