pH Buffer- Color Coded Yellow, Concentration Not Applicable, CAS Number 123-03-5, 547-58-0, 7558-79-4, 7732-18-5, 7778-77-0, Molecular Weight Not Applicable, Chemical Formula Not Applicable, APHA Not Applicable, Chemical Grade ACS, Chemical Family Type Solution, Calibration Certificate NIST, Shelf Life 12 mo, Shipping Restrictions Not Applicable, Standards ISO 17025, Special Information Use as laboratory reagent. This item has been restricted from sale in the following state (s): []