IVYX Scientific Multi-Volume Adjustable Micropipette/Pipettor 100-1000 μl HIGHLY ACCURATE: Calibrated in accordance with ISO 8655 for precision and accuracy. Each pipette supplied with an individual test certificate. The quality control involves gravimetric testing of each pipette with distilled water at 22°C. Maximum permissible systematic error (Inaccuracy): at 100μL : 2μL; at 500μL : 3.5μL; at 1000μL : 6μL. Maximum permissible random error (Imprecision): at 100μL : 0.7μL; at 500μL : 1.25μL; at 1000μL : 2μL EASY TO READ AND USE: Digital display clearly reads volume setting from 100 to 1000 μL in increments of 5 μL. Ergonomic design and lightweight prevents repetitive strain injuries. The piston button is easily rotated to select the desired volume. Tip ejector makes easy and quick tip change. UNIVERSAL SIZED TIPS: Accepts all universal sized tips, so you don't have to spend a fortune for proprietary tips. DURABLE: The tip cone is made of PVDF (Polyvinylidene difluoride), which provides excellent resistance to solvents, acids and bases. Low operation force. Smooth thumb pump action and smooth aspiration of various liquid. Easy to maintain and calibrate with the tools and silicone grease supplied. AUTOCLAVABLE: The tip core can be sterilized by autoclave, for 20 mins at 121°C.