For quick and easy filtration, Whatman 3-piece Filter funnels are available with a choice of three plates. They also come in several sizes to match your needs.Polypropylene Plate: Optiol extra. Recommended for most acids (except concentrated nitric acid and fuming sulfuric acid) at room temperatures. Suitable also for most alcohols, glycols, ethers, and ketones. Maximum working temperature 1�C
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