Clear pH 12.00 Standard Buffer Solution, 500mL Pack Size_10 Twenty-five-gram bottle of laboratory-grade zinc

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Clear pH 12.00 Standard Buffer Solution, 500mL Pack Size_10 Twenty-five-gram bottle of laboratory-grade zincBoric acid, potassium chloride, and sodium hydroxide clear pH 12. 00 buffer at 500mL, holding pH stable at 25 degrees C for high alkaline meter calibration in chemistry and water quality labs.