Hey guys I have a couple gallons of propylene glycol and vegetable glycerin that I bought about 3 years ago. Does anyone know if this would still be good for DIY juice making? I'm a victim of the New York state vaping ban and I have to go back to making my own juice (salt nic) also, does anyone have any tips for a first timer with DIY salt nic? I'm probably going to get all my ingredients from wizard labs. Any help appreciated! Thanks!