The 7000 series syringes are considered modified Microliter syringes for their unique zero dead volume design. This syringe series is ideal for dispensing volumes from 0.05 µL up to 5 µL. The fine gauge plunger wire extends all the way to the tip of the needle ensuring that all solvent is expelled from the needle. Therefore, it is not recommended to remove the needle or plunger. Hamilton Company offers a calibration service for precision syringes and Digital Syringes. A Certificate of Calibration is provided with the product and the procedure is performed with an unbroken chain of calibrations traceable to N.I.S.T..