3M Shortening Monitor Strips 3.75 in. x 0.3125 in.

Each starter kit contains one printed card with instructions and an illustrated evaluation guide, and one glass vial with cap containing 40 shortening monitor strips
Product is designed to determine the level of shortening degradation in commercial deep fat fryers (uses free fatty acid concentration as the measurement)
Strips are dipped into hot shortening and the change in color bands indicates the level of shortening degradation
White/Blue chemical-coated paper strips, 3-3/4 in. long
Easy to use, easy to read and eliminates guesswork.
Helps keep fried food quality high.
Helps save money by preventing the premature disposal of shortening.
Works equally well in animal, vegetable or A/V blend shortenings.