UcalibrateIT.com offers a Full Line of Certified and Custom Made Calibration Standards. We work with leading manufacturers to produce a wide range of Petroleum, Lube, Crude Oil and Polymer Calibration Standards. • Our Calibration Standards are produced and certified “in-house” and are accompanied with a Certificate of Analysis indicating traceability to NIST, for ASTM methods, or other equivalent International Standards • We provide Standards for analyzing • Biodiesel for free and total Glycerine, Sulfur , Calcium, Magnesium and Phosphorous • Ultra low Sulfur in Diesel fuel • New and used Lubricating oils which require complex and hard to obtain Standards • Crude oil and light oils for Hydrogen Sulfide and Mercaptans.