Nerbe plus pipettes are manufactured from high quality optically clear polystyrene. Internationally color coded for easier size identification. Minimal meniscus formation feature delivers optimal measurement values. Enhanced ease of use - all nerbe plus serological pipettes employ ascending and descending graduations. The polystyrene used maintains fast flow. Pipettes are equipped with a high quality filter. Pipettes are free of RNase/DNase, pyrogens and DNA. Pipettes are sterile R and non-cytotoxic.