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Phenolpthalein indicator paper. The vial contains 100 strips @ 3 mm x 45 mm Phenolpthalein will respond to pH ranges between 8.2 – 10.0Very sensitive to ammonia vapors Color change: pH 8.2 (colorless) to 10.0 (pink)
This paper is impregnated with PTC. Seven out of 10 persons can detect a definite taste, others do not. The vial contains 100 strips @ 3 mm x 45 mm Use for genetic studies, science fair projects and food preference studies PTC Phenylthiocarbamide (phenylthiourea) is an organic compound that either tastes very bitter or is…
Red litmus paper the vial contains 100 strips @ 3 mm x 45 mm Red Litmus will react to pH ranges between 6.8 – 8.1Used to test for alkali Color Change: pH 6.8 (red) to 8.1 (blue)
Wide range indicator paper. The vial contains 100 strips @ 3 mm x 45 mm This wide range indicator paper will respond to pH ranges between 1 – 14 in increments of 1 pH unit. Each vial contains a pH color comparison chart.
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