配方类型:

ELEMENTARY Preparations

配方说明:

配方组成:

ammonium sulfate/10
ammonium bifluoride/15
glycerin/40
bariumsulfate/15
oxalic acid/8
hot water/12

配制方法:

warm the washed glass slightlybefore writing on it with this fluid. allow the fluid to act on the glass for about 2 min.
this is an excellent preservative for leather book bindings,luggage, and other leather goods.