BS 7897-3-1997 标准详情
- 标准号:BS 7897-3-1997
- 中文标题:虫胶和紫胶片规范.第3部分:漂白虫胶
- 英文标题:specification for lac and shellac - bleached lac
- 标准类别:英国标准
- 发布日期:1997-08-15
Gives requirements for two grades differing in matter insoluble in hot alcohol, matter soluble in water, ash and wax content. Definitions, colour, copals, rosin, free chlorine content, arsenic and lead content tests are all specified.
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