I am getting asked more and more to work on R600a domestic refrigerators but I always avoid them and feel that I should investigate further if it is worth me getting kitted out for them. I have never even purchased a canister of R600a and would like to know do you charge with scales or a charging still as I find electronic scales in small amounts not accurate enough and always seem undercharged, charging cars is fine, is the gas entered in liquid or vapour state and can you still use a normal vac pump or is it a special spark proof item. I sat my C&G gas handling this year and to my surprise there was no mention of using R600a Safely.