125ML || Woulff's 125ml bottle for gas washing is made from high quality Borosilicate 3.3 Glass TWO NECKS || Gas washing bottle has two necks with 14/23 sockets GAS IMPURITIES || Can be used to remove impurities from gasses EASY EXCHANGE || Ground glass necks allow for easy sealing and exchange AUTOCLAVABLE || Bottle is autoclavable Woulff Gas Wash Bottle made from high quality, heavy duty borosilicate glass. 125ml capacity. Ground glass joints allow for easy sealing and exchange. Can be used to remove impurities from gasses. 2" diameter, 5" overall height. Each neck has a 14/23 socket, is 1.5" long and has a diameter of 0.75". Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point 515°C | Annealing Point 565°C | Softening Point 820°C Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.