产品描述：

1. Color coded magnifier pipets make volume reading easierc 2. Clear and bidirectional graduations provide choice of ascending and descending scalesc 3. Negative graduations allow additional working volumec 4. All pipets are supplied with a filter plug to help prevent overfillc 5. Graduations are calibrated for accurate dispensing to within ±2%c 6. Pipets are gamma sterilized and non-pyrogenicc 7. Individually wrapped, paper/plastic