Test Paper

pH paper and Indicators
For educational use, pH paper is sold in vials of 100 strips, or box of 12 vials. Strips measure 1/4" x 2".

Description	Item # / Pkg	Price
Red Litmus: Used to test for alkali. Sensitive to 0.0002 N Na0H. Color change: pH 4.3 (red) to 6.8 (blue-violet) to 8.1 (blue).	T62 100 strip vial	$ .95
	T62B 12 vial box	$ 9.50
Blue Litmus: Used to test for acids. Sensitive to 0.0001 N HCI. Color cange: pH 4.3 (red) to 6.8 (blue-violet) to 8.1 (blue)	T63 100 strip vial	$ .95
	T63B 12 vial box	$ 9.50
Nuetral Litmus: Used to test for acids or bases. Sensitive to 0.0004 N HCI or 0.0005 N Na0H. Color change: pH 4.3 (red) to 6.8 (blue-violet) to 8.1 (blue).	T13 100 strip vial	$ .95
	T13B 12 vial box	$ 9.50
Wide Range: Incluedes color comparison chart for pH 2, 4, 6, 8, and 10.	T64 100 strip vial	$ 1.50
	T64B12 vial box	$ 11.50
Cobalt Chloride: Indicates relative humidity by colar change: pink indicates high humidity, blue indicates low humidity.	T11 100 strip vial	$ .95
	T11B 12 vial box	$ 9.50
Congo Red: For strong acids. Color change: pH 3.0 (blue-violet) through various shades of blue to 5.0 (red)	T12 100 strip vial	$ .95
	T12B 12 vial box	$ 9.50
Methyl Violet: Color Change: pH 0.2 (yellow) to 2.0 (blue-violet).	T15 100 strip vial	$ .95
	T15B 12 vial box	$ 9.50
Phenolphthalein: Very sensitive to ammonia vaports. Color change: pH 8.2 (colorless) to 10.0 (pink).	T16 100 strip vial	$ .95
	T16B 12 vial box	$ 9.50
Potassium Iodide: Used to test for free iodine in a solution. Color varies from white throught blue to black depending on iodine concentration.	T17 100 strip vial	$ .95
	T17B 12 vial box	$ 9.50

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