Min. Order Reference FOB Price
1 kg US$2.00-5.00 / kg
Product Description
Product Description Thymolphthalein is a kind of PH indicator. It is a white to off white powder, insoluble in water. The range of PH change is 9.4-10.6, and the color changes from colorless to blue. It is also often combined with other indicators to form a gentle indicator, which makes the ...