Available from UDY Corporation
The UDY Colorimeter is used for the final measurement step in protein measurement. UDY Colorimeters use a LED light source. Light passes through the cuvet, dye solution then through an Interference Filter to a Photodiode detector. The photodiode detector generates a small current proportional to the light intensity reaching it. Protein tests are made using a 480 nm narrow-band-pass interference filter. Acid Orange 12 dye peak absorption is near 480 nm. Because the dye absorbs 480 nm light very strongly, a special flow-through short-light path cuvet is used.