Woulff's 1000ml bottle for gas washing is made from high quality Borosilicate 3.3 Glass Gas washing bottle has two necks, each with a 24/29 socket Can be used to remove impurities from gasses. Ground glass necks allow for easy sealing and exchange Made of high-quality Borosilicate 3.3 glass. Autoclavable, with superior chemical durability. Low temperature gradient - can withstand high temperatures & thermal shocks 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 Woulff Gas Wash Bottle made from high quality, heavy duty borosilicate glass. 1000 ml capacity. Bottle features 2 necks, each with a 24/29 socket. The ground glass joints allow for easy sealing and exchange. Can be used to remove impurities from gasses. Bottle measures 9.5" tall (including necks) and is 4.25" in diameter. Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks.