Rainin Pipet plus variable volume pipette R200 R10 R20 set of 3 bonus

used set of 3 Rainin Pipet Plus variable volumes pipets with tip ejectors. model R 200 (20-300ul). R20 (2-20 ul) and R10 (1-10 ul) 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.