Methyl red, is crystallization lustrous purple or red brown powder. Is one of the commonly used ph indicator, concentration of 0.1% ethanol solution, often pH4.4 (red) to 6.2 (yellow). Also used in protozoa vital staining.
Protozoa vital staining; PH indicator, pH color range of 4.4 ~ 6.2 (red) (yellow); Titration of ammonia, the weak organic base and alkaloids, but not for organic acids except oxalate and picric acid; Can be mixed with bromocresol green and methylene blue indicator to shorten color domain and to improve the sharpness of the color change, Precipitation titration indicator adsorption, such as using thorium nitrate titration fluorine ion; Verification of free chlorine, chlorite and other oxidant;
Methyl red is one of the commonly used ph indicator, concentration of 0.1% ethanol solution, often pH4.4 (red) to 6.2 (yellow), also used in protozoa vital staining.
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