"Alveolar air" means that portion of a breath sample submitted which is nearest in exchange between the lungs and the blood, the last portion of a maximal expiration.
N.H. Admin. Code § Saf-C 6301.05
#8064, INTERIM, eff 4-1-04, EXPIRES: 9-28-04 (See Revision Note at chapter heading for Saf-C 6300); ss by #8114, eff 7-14-04; ss by #9683, eff 3-23-10 (from Saf-C 6301.04 )