Our own brand Philip Harris rimless test tubes offer high quality at an economical price. They are ideal for a wide range of laboratory applications. Manufactured from borosilicate 3.3 glass tubing. Uniform wall thickness between 0.8 - 1.0mm. Designed for maximum heat transfer and chemical resistance.Tube Dimensions: 16mm x 150mmPack of 100Bung Size - 13 - B8A82569