This is supplied with connectors for plastic and stainless steel syringe filter units. It allows simultaneous filtration and dosing. The smallest dose volume is 0.5ml, the largest 5.0ml. Volumes between these limits can be chosen in 0.5 ml steps. The plastic parts are made of Ryton polyphenyl sulphide, which has good thermal stability and chemical compatibility. The syringe can be autoclaved at 121°C, but the dosing accuracy may deteriorate when repeatedly autoclaved.