Recommended for use as a control for the SNAP Beta Lactam test, to ensure your SNAP test results are correct. The vials are to be a reconstituted milk-based control,which contains penicillin G at 5 ppb with an accuracy of ±10% (as required by NCIMS). Prior to reconstitution, store refrigerated or at room temperature. After reconstitution, store refrigerated and use within 24 hours. Complete package of 50 individual control vials, sufficient to run 100 samples along with 50 disposable pipets.