Produced under strict laboratory controls and made from the highest quality materials, verification tokens meet the exact standards required for precise calibration of your trace instrument. The tokens are packaged in contaminant free metal cans and sealed for maximum freshness and longevity.
Wear clean cotton gloves (p/n GL7500) when handling any verification token or sample swab to prevent natural oils, dirt and lotions from interfering with the instrumentís ability to analyze samples. Verification tokens are single use and should not be reused. Replace lid securely immediately after opening to retain product freshness.