Product Overview
Indicator test papers are used to determine if something is an acid or a base; certain test papers are used to detect presence of a specific chemical compound or group of compounds.
The following indicator test papers are available:
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- Blue Litmus - Turns red under acidic conditions
- Red Litmus - Turns blue under basic conditions
- Neutral Litmus - Turns red under acidic and blue under basic conditions
- Curcumin - The normally yellow compound changes to red under basic conditions
- Phenolphthalein - Turns a bright red under basic conditions
- Congo Red - Blue below pH 3.0; brilliant red above pH 5.2
- Thymol Blue - Changes from blue to yellow below pH ~8.0; then from yellow to red below pH ~2.5
- Phenol Red - Yellow below pH 6.8; red in pH range 6.8 to 8.2; bright pink (fuchsia) color above pH 8.2
- Methyl Orange - In an acidic medium, methyl orange turns red, while in a basic medium, it turns yellow
- Starch Potassium Iodide - Detects peroxides and other oxidizing agents; Turns blue/purple color, darkens as concentration increases
- Cobalt Chloride - Detects the presence of moisture; Will turn from blue to a light pink if water is present
Indicator test papers are supplied in stoppered vials of 100 strips.
How to use:
- Remove one test paper from the vial, being careful not to touch the strip anywhere other than where you grasp it.
- Dip the strip into the solution to be tested for 1-2 seconds.
- Read the strip.
NOTE: The solution must be water-based.
