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Manufacturer Varies Tub Stopper,1-3/8" to 1-5/8" Pipe Dia. P-100 Manufacturer
This unit comes in a neutral silver that works with any color scheme in your lab.
GRAINGER APPROVED P-100 Tub Stopper,1-3/8" to 1-5/8" Pipe Dia. PK 10
I noticed that the MOS2 3-4 ยต Fisher (15-30 Microtrac) has a very narrow distribution curve.