The color of liquid is one of the most difficult things to control during production. But it’s important. Would you choose a bottle of juice or cleaner that is lighter in color than the other bottles on the shelf? What about cough syrup? Liquid is hard to measure because it can range in transparency from translucent to opaque. It’s also hard to hold, and the measurement device can’t touch it or the optics and the sample will both be contaminated. Today&rsq...