Where:
Wi =Weight of the "i"th VOC compound, in grams
Ww =Weight of water, in grams
Wc =Weight of exempt compound, in grams
Mwi =Molecular weight of the "i"th VOC compound, in g/g-mole
MWw =Molecular weight of water, in g/g-mole
MWc =Molecular weight of exempt compound, in g/g-mole
PPc =VOC composite partial vapor pressure at 20° C (68° F), in mm Hg
Vpi =Vapor pressure of the "i"th VOC compound at 20° C (68° F), in mm Hg
(VOC)a = (Dc)a ( (Wv)a - (Ww)a - (We)a)/1 - ( (Vw)a + (Ve)a)
where:
(VOC)a =VOC content of ink, coating or adhesive as applied, expressed as a mass of VOC, in pounds, per volume of coating, in gallons, minus water and excluded compounds
(Dc) a =ink, coating or adhesive density as applied, in pounds per gallon
(Wv)a =the weight fraction of total VOC in the ink, coating or adhesive as applied
(Ww)a =the weight fraction of water in the ink, coating or adhesive as applied
(Vw)a =the volume fraction of water in the ink, coating or adhesive as applied
(We) a =the weight fraction of excluded compounds in the ink, coating or adhesive as applied
(Ve) a =the volume fraction of excluded compounds in the ink, coating or adhesive as applied.
N.Y. Comp. Codes R. & Regs. Tit. 6 § 234.2