set VWR pipet EHP ergonomic Pipette 100-1000ul single channel 20 200 EHP

set of four working VWR pipet EHP ergonomic high performance single channel pipets. The pipets are: 100-1000ul. 20-200ul 10-100ul. 1-20ll. all with tip ejectors. 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 con6/5clearplbxtop