Stopper/Tubing Sizer
Determines the correct gauge for flasks, bottles and tubing. Insert into the vessel and read the size at the nearest line. Diameters between 4 and 52 mm. Length is 6 1/8 in. (156 mm wide).
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Colonial Scientific has teamed up with the industry leaders, Fisher Scientific and VWR, and now offers their entire product line. Colonial Scientific provides any part from the Fisher Scientific site with a part number.
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