VWR pipet UHP Pipette 10-100ul single channel 10 100 ultra high performance

used working VWR pipet ultra high performance single channel pipet 10-100ul with tip ejector. The pipettors sold have been used only with non-radioactive and non-biohazardous materials. Also. all pipettors have been tested to work properly- I have measured the aliquottes on a Mettler scale. If you are not satisfied. you can return the product within 14 days for a full refund excluding shipping expenses.Lot con6/5thermo