Acura® 846 Positive Displacement Micropipette, DWK Life Sciences. Supplier: DWK Life Sciences (KIMBLE) Description: Equipped with an with ETFE tipped plunger, these micropipettes are ideal for pipetting high density, viscous, foaming, or volatile liquids. ,10842-436CS,10842-438CS,10842-432CS,10842-434CS,10842-430CS.