CL-XPosure Film is an economically priced clear-blue X-ray film that exhibits the same detection sensitivity as other commercially available film brands. CL-Xposure works with chemiluminescent reagents for either alkaline phosphatase (AP) or horseradish peroxidase (HRP) and can also detect radioactivity, making it ideal for Western, Southern and Northern blots and Electrphoretic Mobility Shift Assays (EMSA). Make Pierce your one-stop source for all your Western blotting or immunoblotting needs — order your substrates and film at the same time!