Volume is set within seconds. It will not vary while activating the syringe, thanks to the safety-locking nut on micrometric screw. Dose by dose reproducibility (CV) is excellent, as witnessed by performance figures.
Smooth plunger travel and tightness achieved through high precision stainless steel plunger and grounded glass barrel. No O-ring to mess with or replace. Each laboratory syringe is supplied with a PVC protection sleeve to prevent glass barrel breakage.