S600+ Instruction Manual 
C-22  Chromatographs  Revised July-2017 
The mole percentage reported for code 108 is calculated as:  
Cnas(hexane)  = Cna(C6+) x 0.47466 
Cnas(heptane)  = Cna(C6+) x 0.35340 
Cnas(octane)  = Cna(C6+) x 0.17194 
Cnas (C6+)  = 0.0 
Be sure to carry forward the other mole percentages from Cna to Cnas. 
The mole percentage reported for code 109 is calculated as: 
Cnas(hexane)  = Cna(C6+) x 0.5 
Cnas(heptane)  = Cna(C6+) x 0.5 
Cnas(octane)  = Cna(C6+) x 0.0 
Cnas (C6+)  = 0.0 
Be sure to carry forward the other mole percentages from Cna to Cnas. 
The mole percentage reported for code 110 is calculated as: 
Cnas(hexane)  = Cna(C6+) x 0.5 
Cnas(heptane)  = Cna(C6+) x 0.25 
Cnas(octane)  = Cna(C6+) x 0.25 
Cnas (C6+)  = 0.0 
Be sure to carry forward the other mole percentages from Cna to Cnas. 
The mole percentage reported for code 111 is calculated as:  
Cnas(hexane)  = Cna(C6+) x 0.57143 
Cnas(heptane)  = Cna(C6+) x 0.28572 
Cnas(octane)  = Cna(C6+) x 0.14285 
Cnas (C6+)  = 0.0 
Be sure to carry forward the other mole percentages from Cna to Cnas. 
C.9.5  C7+ Handling  
Chromatographs often report mole percentages up to C7, but you may 
need to break these percentages down to identify heptane, octane, 
nonane, and decane components. Use the following formulas. 
Note:  If included, this breakdown must add up to 100.0.