These syringes are only used on the Dual Syringe Diluter pumps. The Sample Syringe has a Diluter Termination (DX) and a PTFE tipped plunger. The syringe was specifically designed for the right side of a diluter to minimize the dead volume and simplify priming. DX syringes are available from 25 µL to 1 mL. Dead volume is not an issue above 1 mL so for sample volumes above 1 mL a TLL syringe is suitable.