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Polypropylene Pneumatic Trough
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The gas delivery tube is connected to an inlet nipple on the bottom and passes up through a hole in the rim at one end of the trough to prevent siphoning. Size: 13" L x 7-1/2 W x 3-3/4" D. Inlet and overflow tubes accept 1/4" tubing. Without bottles.

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Other Items to Consider:
 Rubber Stoppers, Two-Hole
 Medium Wall Red Rubber Tubing, Machine Made
 Giant-Size Molecular Models
 










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