Each package includes: BOECO SA pipettor, Manual, certificate, Service tool, Fat Inexatitud Volume 20 ál ± 0,90 % Inaccuracies 20 µl± 0,40 % Handle made of TPE (Elastomer thermo-plastic) which prevents the transfer of heat to internal components ensuring the accuracy of the operation of the pipette even in continuous use. All pipettes are tested acc. the standard ISO 8655 / DIN 12650 has been calibrated in an accredited laboratory with ISO / IEC 17025. Manufactured in accordance with the standard ISO 9001: 2008 and ISO 13485: 2003 quality standards