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NMR Sample Tube Pressure Caps Polyethylene Assorted Colors for 5 and 10 mm Tubes^ Fits Tube Size (mm); 5 mm. Color; assorted (20 each of red black white green and yellow) A tight-fitting polyethylene cap which stays in place even with a build-up of in
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Sample Tube Pressure Caps for 3 5 and 10 mm Tubes Tight-fitting polyethylene cap which stays in place even with a build-up of internal vaporization pressures. Assorted (20 each of Red Black White Green Blue and Yellow). 100 per case
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