The RFM990-AUS32 is an extremely high accuracy Refractometer specifically designed to meet the stringent needs of the chemical manufacturing industry. Of particular interest is it’s compliance with the strictest of ISO procedures in relation to the manufacture of Diesel Exhaust Fluids, such as AUS and Adblue®. ISO22241-2 dictates the highest level of measurement must be achieved under the tightest limits of temperature control. The RFM990-AUS32 is the only refractometer on the market that complies in terms of refractive index and temperature measurement/control specifications. In addition, the instrument is fitted with specific Urea scales and temperature compensation, so even the slightest movement in temperature will be corrected. Being part of the RFM900 series of refractometers, user of the RFM990-AUS32 will also benefit from other unique features such as RFID user identity/clearance, significant on-board data storage, calibration audit trails and a methods system that makes changing instrument parameters a simple two-button process. Full details of these features can be seen by visiting the RFM900 section of the Bellingham + Stanley Internet site. No matter how good the instrument performance, without good verification, it is not possible to confirm the instrument meets the specification laid down in ISO22241-2. Bellingham + Stanley offer a new UKAS Certified Reference Material for this purpose at precisely the correct RI value.