Rainin Pipet plus variable volume pipette R200 fgtyu R 200 ul tip ejector

used Rainin Pipet Plus variable volume with tip ejector. model R 200 (20-300ul) 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 5 days for a full refund excluding shipping expenses.