A range of aqueous reference standards for process and instrument calibration and substances that closely match matrix component samples being analyzed; used to determine the absence of interference from matrix, reagents, and equipment.
Used to determine the sub of all acid compounds present in a sample. TAN Solvent, Chem-Lab (total acid number) contains 50% C7H8 + 49.5% IPA + 0.5% H2O by volume.