QWORK® Conical Flask Glass Erlenmeyer Set (50, 100 and 250ml), 3 x Graduated Borosilicate with Stopper for Lab, Experiment, Chemistry

3 Sizes: 250ml, 100ml, 50ml, each flask has clear scale, allowing you measure the liquid accurately. Good Sealing: Frosted glass sealing stopper provides superior sealing. Note: Stoppers and bottles correspond one to one, not interchangeable. Durable: Made of Borosilicate 3.3 Glass, it has high temperature resistance, acid and alkali resistance, durable to use. Application: Suitable for measuring or storing fluid in laboratory experiment, chemistry experiment etc. Package Content: Includes 3 Erlenmeyer Flasks in different sizes, meeting your needs. And safe package for good protection.