Questions about calling OH radical concentration and the unit conversion involved

Dear developer,
I want to call the concentration of OH radicals in the photolysis module. After checking some codes, I found that I can use GAS (LHO) in aqchem.F to call the concentration of OH radicals. I want to know if this is reasonable. The unit of GAS (LHO) is mol/molV. How should this unit be converted into mol/cm-3? If there is a better way to call OH concentration, please guide me. Thank you!

Hi @Tend, Can you please share more about what you are trying to accomplish with changes to the photolysis module. This will help us provide appropriate advice. Thank you!