Rubber Stopper, #6.5, solid

Don't want to purchase a ring stand and thermometer clamp? Check out this pack of 5 beaker thermometer clips to assist in your scientific experiments.

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This high-quality acrylic burette has a 50 ml capacity with 0.1 ml divisions. It has readability & tolerance of +/- 0.1 ml, features a PTFE (Teflon) stopcock for ease of use, and can be used with pHs ranging from 1 to 14.

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This high-quality acrylic burette has a 25 ml capacity with 0.1 ml divisions. It has readability & tolerance of +/- 1%, features a PTFE (Teflon) stopcock for ease of use, and can be used with pHs ranging from 1 to 14.

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These #6 rubber stoppers are 26-32 mm in diameter with two 5 mm diameter holes.

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These #6 rubber stoppers are 26-32 mm in diameter.

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This set contains a glass thistle tube and a 12" piece of dialysis tubing.

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These clear, unbreakable baby soda bottles (also called giant test tubes) are great for kids.

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This special brush is used to clean our 50 ml burettes.

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These #10 rubber stoppers are 42-50 mm diameter with one 5 mm diameter hole.

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This digital pH meter is a quick and easy way to accurately measure the pH of aqueous (water) solutions, whether in an aquarium or science project!

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