N.Y. Comp. Codes R. & Regs. tit. 6, § 228-2.6
(e) The composite vapor pressure of organic compounds in cleaning materials shall be determined by quantifying the amount of each compound in the blend using gas chromatographic analysis ASTM E 260-96 (2006) for organics and ASTM D3792-05 for water content, as applicable, and the following equation:
Where:
Ppc = VOC composite partial pressure at 20°C, in mm Hg.
Wi = Weight of the “i”th VOC compound, in grams, as determined by ASTM E 260-96.
Ww = Weight of water, in grams as determined by ASTM D 3792-05.
We = Weight of the “i”th exempt compound, in grams, as determined by ASTM E 260-96.
Mwi = Molecular weight of the “i”th VOC compound, in grams per g-mole, as given in chemical reference literature.
Mww = Molecular weight of water, 18 grams per g-mole.
Mwe = Molecular weight of the “i”th exempt compound, in grams per g-mole, as given in chemical reference literature.
Vpi = Vapor pressure of the “i”th VOC compound at 20°C, in mm Hg, as determined by subdivision (f) of this section.
(g) If air pollution control equipment is used to meet the requirements of this Subpart, the owner or operator shall make the following determinations:
(i) For adhesives that do not contain reactive diluents, grams of VOC per liter of adhesive, less water and exempt compounds, shall be calculated according to the following equation:
Where:
Ws = weight of volatile compounds, in grams.
Ww = weight of water, in grams.
We = weight of exempt compounds, in grams.
Vm = volume of material, in liters.
Vw = volume of water, in liters.
Ve = volume of exempt compounds, in liters.
(j) For adhesives that contain reactive diluents, the VOC content of the adhesive is determined after curing. The grams of VOC per liter of adhesive, less water and exempt compounds, shall be calculated according to the following equation:
Where:
Wrs = weight of volatile compounds not consumed during curing, in grams.
Wrw = weight of water not consumed during curing, in grams.
Wre = weight of exempt compounds not consumed during curing, in grams.
Vrm = volume of material not consumed during curing, in liters.
Vrw = volume of water not consumed during curing, in liters.
Vre = volume of exempt compounds not consumed during curing, in liters.
(k) Grams of VOC per liter of material shall be calculated according to the following equation:
Where:
Ws = weight of volatile compounds, in grams.
Ww = weight of water, in grams.
We = weight of exempt compounds, in grams.
Vm = volume of material, in liters.
(l) Percent VOC by weight shall be calculated according to the following equation:
% VOC by weight = [(Wv / W)] x 100
Where:
Wv= weight of VOCs in grams.
W = weight of material in grams.