These pipettes feature special benefits without compromising MLA quality. Built with aluminum alloy and stainless steel, the lifetime warranty ensures maximum durability and performance. Pipets are engraved with serial numbers for easy traceability and quality control. Adjust or calibrate pipettors above or below the stated volume ±10%. Ideal for laboratories performing tests requiring multiple or non-standard volumes. Easy-to-read digital volume settings with “click-stops” provide fast and easy volume selection. Low spring force minimizes thumb muscle activity. Calibration feature is handy for viscous solutions.