石蕊测试纸石蕊蓝书JT0110 200纸（1盒）

[Features]
●Discoloration: When the blue test paper comes into contact with an acidic liquid, it will turn red.●This is an acidity and alkaline test paper that is particularly popular for schools and teaching materials, and does not require a pH value.
●There is no need to compare/match it on a color scale (discoloration chart)
●There is a book type with a plastic case (10mm wide x 60mm long, packed with 20床单/书籍X 10本书）和带有单 盒装的塑料分配器的卷型（7mm宽x 5m卷）。