CELLTREAT Scientific Products 9"""" Polystyrene Plasteur Pipet. The Plasteur Plastic Pasteur Pipet offers the aspirating precision of a glass pipet and the safety benefits of plastic. Fine tip is ideal for precision aspirating. No more broken glass: more durable than standard glass pipets. No damage during shipping and handling as compared to traditional glass pipets. Available sterile for convenience. RNase/DNase Free and non-pyrogenic. Every case is printed with the lot number for quality traceability. Packaged sterile, 25 bulk packed/re-sealable bag, 500/case.