These watch glasses 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.
|Extra coarse fritted disc|
|Pyrex Gas Dispersion Tube|
|Disperse or scrub gas in liquids|
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