VWR research pipet Pipette Pipettor single channel set 1000 10 ul fixed vol

used set of two single channel VWR (Swill made) research pipets fixed volume 10 ul. and 1000 ul. It should be variable volume pipets but dialing mechanism stuck at 10 ul and at 1000ul. so. it will work only as fixed volume pipets. 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 gar1stshYelbx