Corning PYREX 9985-150 Plain Watch Glass - 150mm (Pack of 55)

These 150mm diameter PYREX plain watch glasses are designed to fit 2L PYREX beakers. They possess high chemical durability, thus preventing contamination of solutions. They are molded to the same radius of curvature for convenient stacking. The heavy wall and uniform fire-polished edge provide mechanical strength. The outside diameter cannot be controlled within close limits and a slight degree of out-of-round can be expected to occur.

Price is for one pack of 20 watch glasses.