Divers fill their own cylinders! so is it practical/possible to fill the cylinders of a liferaft? I understand that an "additive" is included with the fill "to assist the gas to operate smoothly and effectively" is this so? and what is the additive?
Would it be better simply to visit Air Products and get it filled? or is it economical to purchase/hire a large cylinder and do it myself?( given the legislation regarding transportable gasses etc). I am talking about a commercial situation not just an individual with 1 liferaft?