These calibrators are used to calibrate the HPLC system for the quantitative measurement of the analyte contained in them. Each analyte has a concentration such as to allow the construction of a calibration curve on one point. These calibrators are lyophilized in human matrix and must be handled as if they were a patient sample itself.

| Multiparametric Calibrator for 6 parameters in urine | |
| ( Phenylglyoxilic Acid, Hippuric Acid, Methylhippuric Acids, Mandelic Acid,) | |
| Calibrator for t,t-Muconic Acid in urine | |
| Calibrator for S-phenylmercapturic Acid in urine | |
| Calibrator for 1-Hydroxypyrene in urine | |
| Calibrator for o-cresol and Phenol in urine | |
| Calibrator for Protoporphyrin IX and ZnPP in whole blood | |
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