DigiTUBEs come complete with leak free, polyethylene screw caps with no metallic additives. The volume lines on 50ml DigiTUBEs were calibrated in accordance with ASTM Standard E542-01. The accuracy of all lines exceed the tolerance specifications of ISO 6706, Plastics laboratory ware – Graduated measuring cylinders, and meet the following tolerance requirements of ASTM Standard E1272, Standard Specification for Laboratory Glass GraduatedCylinders: +/- 0.25ml for all volume lines on 50ml tubes (Class A). This reduces and eliminates the need for graduated cylinders and volumetric flasks.

Second generation DigiTUBEs offer a flatter bottom than previous models providing a more intimate contact with the base of the DigiPREP well. This results in faster sample temperature response times.

Note:  For use with 50ml DigiPREP systems.