40% Acrylamide/ bis-acrylamide solutions: IBI Scientific 40% acrylamide/ bis-acrylamide solutions can be purchased in 19:1, 29:1 and 37.5:1 configurations. These products are manufactured here at IBI Scientific using Type 1 reagent grade water produced from our state-of-the-art water purification system. Quality Control testing is also completed here at IBI Scientific as these solutions are certified as nuclease and protease free.