This product is a certified reference material (CRM) certified to International Standards BS EN ISO / IEC 17025 and ISO 17034 under UKAS accreditation. Please note that the value stated on this page is nominal. All certified values for the current lots of all Paragon Small Sample Viscosity Standards ASTM D2162 can be found on the Paragon Scientific webpageSmall sample volume standards are manufactured specifically for the users of ASTM D7279, Standard test method for the kinematic viscosity of transparent and opaque liquids by automated Houillon viscometer and other similar type of test equipment.