The Chauvet DJ BF5 (previously BJ5) is a premium bubble fluid designed to give your bubble machine the best output and performance. Specially formulated to provide a high output of bubbles that look great and are long lasting. 100% safe to use with the non-toxic and non-flammable solution. Great for parties, events, and more. Just add this to your Chauvet DJ Bubble Machine and enjoy the bubbles.