Shimi Samed Paya Mashhad company provides the calibration reference equipment’s and materials with valid certificates and stable environmental conditions. It’s honor to have the first laboratory that could obtain the certificate of accreditation laboratory from Iranian National Standardization Organization in Razavi Khorasan province. Reference oils of the laboratory have valid certificates and traceability. Due to that, viscometer is one of the most important equipment at many productions process of factories. So it is possible to calibrate any kinds of viscometers in the Viscosity Laboratory even within one to three working days.