This 200mL pre-scored, disposable Coliwasas sample tube is manufactured from soda lime glass that can be easily broken for quick disposal. It measures 7/8 x 42in long and has a tapered bottom with an approximately 1/2in diameter opening and a sample capacity of 200mL. This Coliwasas tube has a liquid-tight PTFE seal, and permits sampling to within 1/2in of the drum bottom. After a sample has been collected, lower and press lightly on the inner tube to positively seat the PTFE seal, locking the sample column into place. Disposable. Pre-scored. Material: Soda Lime Glass. Seal Material: PTFE-Lined. Opening Diameter: 1/2in. Dimensions: 7/8 x 42in. Capacity: 200mL. Wheaton #: 885220.