Dilute(Add_Volume_Units, Stock_Conc, Stock_Conc_Units, Stock_Formula, Final_Volume, Final_Volume_Units, Final_Conc, Final_Conc_Units, [Final_Formula])
Calculate volume of stock solution required to make specified dilution Input:        Add_Volume_Units = Units of added volume of stock solution (number)                   Stock_Conc = Concentration of stock solution (number)                  Stock_Conc_Units = Stock concentration units (text)                  Stock_Formula = Stock solution chemical formula (text)                  Final_Volume = Final volume of dilution (number)                  Final_Volume_Units = Units of final volume (text)                  Final_Conc = Concentration of dilution (number)                  Final_Conc_Units = Units of dilution concentration (text)                 
Final_Formula (optional) = Chemical formula of dillution (text)
Output:      Volume of stock solution requred to make specified dilution (number) |
Note: ChemUnits recognizes the following common units for chemical concentrations:
Molar, molar, M
millimolar, mM
micromolar, uM
nanomolar, nM
ppm, ppb**
**ChemUnits defines ppm = mg/l and ppb = ug/l.