"The Bio-inLine® Biofilm Reactor consists of twelve (12) nylon coupon holder plugs threaded into a black PET or stainless steel lid. The coupon holder plugs can accommodate one 1/2 in. (12.7 mm) diameter coupon each, totaling twelve (12) coupons per reactor (same coupons as the CDC and Rotating Disk Biofilm Reactors). The lid with coupon holders and coupons is mounted to a black PET or stainless steel body which contains a half-inch channel designed to mimic a standard half-inch water pipe. The entire chamber seals shut with the help of silicone rubber O-rings, allowing the reactor to hold up to 100 psi.The Bio-inLine® Biofilm Reactor was designed to allow the growth and testing of biofilms grown under conditions found in common water distribution systems. They can be easily placed in water piping systems, allowing biofilm testing as needed within the system.