the technique utilizes pH indicators and buffering systems to create an environment where the test paper or strip reacts (develops color) proportional to the amount of analyte (QAC) present
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Winters TBT161 Steel HVAC Bi-Metal Thermometer, 2-7/16" Stem, 1/2" NPT Back Mount Connection, 3-1/2" Dial Display, 0-120 F/C Range auspowers_batchthree the technique utilizes pH indicatorsWinters TBT161 Steel HVAC Bi Metal Thermometer, 2 7 16" Stem, 1 2" NPT Back Mount Connection, 3 1 2" Dial Display, 0 120 F C Range A durable and accurate thermometer with a rigid connection. Separable thermowell. Rugged steel case. Bi metallic element. Back connected. 1 2" NPT process connection. Applications: hot water lines, boilers and hydronic heating. Dial: 3 1 2" aluminum with black markings. Case: steel. Lens: glass. Ring: steel chrome plated.