Frank asked how to 'efficiently' purify hundreds of pounds of beeswax to a candle grade. First, what is a candle grade? Roger Morris once told me how to tell is to burn some. If it smokes, drips, or both, the level of impurities are too high. Candles made following of the replies that I have seen so far on Bee-L will not meet this test...at least for processing 'hundreds' of pounds. I only know of two relatively SAFE ways of processing large quantities of beeswax to a true candle grade. One is to buy the Maxant Series 900 Wax Processing tank. Around $600, I think. 978-772-0576. It works by vigorously boiling wax and water, allowing the gunk to fall to the bottom, then draining off the pure wax on the top. This is a large self-contained and self-heated unit that really does the job. The second method, which is considered a closely-guarded secret by some, is to use the same kind of filtering device used for processing maple syrup. As these devices are 'mass produced' they are relatively inexpensive for the amounts they can safely process. The entire filtration line is constantly heated, which is a requirement when working with beeswax. A variety of filtration devices can be used, including diatomaceous earth. Should you choose to go that far, you can produce 'white' beeswax (its natural color) as the diatomaceous earth will remove the grains of pollen that gives beeswax its 'normal' yellow color. Many companies manufacture this equipment. As a start, try Dominion & Grimm. 802-893-3487. Hope this helps, Lloyd Lloyd Spear, Owner of Ross Rounds, manufacturer of comb honey equipment for beekeepers and Sundance pollen traps. http://www.rossrounds.com [log in to unmask]