or
Micropipetter, Single-channel; D-Tipper; Selectable fixed volumes: 50/100/200microL; Factory calibrated; Accuracy: +/-1.3% at 200microL, +/-2.5% at 50microL Precision: 0.30% at 200microL, 0.80% at 50microL; Silver; Use tip size: 0.2mL