Yes it does
You wash the item with clean, hot soapy water then rinse or wipe clean afterwards.
connect two propane cylinders together with pipe. Put a pressure valve on it for safety purposes. Put a fill valve on top of one and a release valve on the bottom of the other. Connect the release...
99.95%(pure ammonia) or better is Refridgeration grade ammonia.
alkaline
Generally 25 % or 30 %.