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With standard taper Cap Stoppers
Shadowless bottom construction allows for viewing with undistorted light
High-quality glass test tubes that meet Federal and American Public Health Association (APHA) standards
Fill Kimble™ Low Form Nessler Color Comparison Tubes and let their shadowless bottom transmit undistorted light. No dark spots form when the tubes are filled with liquid and viewed from the top.
Shadowless bottoms transmit undistorted light
Set of two clear glass Nessler tubes