501 CMR 2.11
Control Standards
(1) Only control standards approved by the Office of Alcohol Testing shall be used with breath
test devices. The Office of Alcohol Testing shall provide an adequate supply of such control
standards and distribute the same to police departments and law enforcement agencies
throughout the Commonwealth. Each such control standard shall be labeled with its expiration
date, alcohol concentration and lot number.
(2) The gas control standard used as part of a valid Implied Consent Breath Test sequence shall
be manufactured at an alcohol concentration not to exceed 0.080% ± 0.006. The test shall be
considered valid if the analysis of the gas control standard results in an alcohol concentration of
0.074% -0.086%. The results shall be truncated to three decimal places.