Фильтры Бумага и другие лаборатории с использованием бумаги

Features: 1) Chemical analysis filter paper: Made of extremely pure cotton linters, Containing nearly 100% alpha grade cellulose 2) pH indicator and test paper: particularly suitable for educational and industrial use. In schools, they are economical, as the amount of paper per student can be carefully controlled 3) Lens cleaning tissue: the tissue is chemically pure and free from silicones and other additives. Most importantly, it can be relied on to safely remove surface moisture and grease