The test tube brush with pig bristle is used to clean test tubes and has hog bristle In the body and nylon In the tuft. The tuft is arranged to allow the brush to reach the bottom of the test tube.
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Hog bristle in the body and nylon in the tuft. The tuft is so arranged as to allow the brush to reach the bottom of the test tube. Overall length is 10"; bristle is 3" long, 1-3/8" in diameter.