Refilling your own Nitrous bottles.. read please

[ultraflo]

An alternate route to refilling a nitrous bottle, if you don't have or want to spend the cash on a refill station... is to chill the bottle you wish to refill, either in a deep freezer or a cooler full of ice and water. After several minutes of doing this, hook the small bottle directly up to the big bottle, open the valves, and the cold bottle will suck the nitrous out of the big bottle, while using a digital scale to keep track of how many pounds you are putting into the smaller bottle, of course... and, viola! One refilled nitrous bottle, no pump, no compressor. Just make sure you have a digital scale and a quality, inline nitrous filter between the bottles

BTW, Nitrous Express sells a refill station complete with a digital scale... you supply the compressor and the bottles, however.