使用说明书手册B125Cal

SensorexPRODUCT INSTRUCTION SHEETB125 ORP Calibration KitProduct InstructionsIntroductionThe performance of an ORP electrode can be determined byFIG.1use of the ORP Calibration Kit and the procedures given below.The Calibration Kit can be used for about 30 two-pointcalibrations.Quinhydroneapprox 1/4"onItems Includedwooden stickItemQuantitypH 4.01 buffer1 pintpH 7.00 buffer1 pintquinhydrone powder20 gramsplastic beakers(150mL)3 eachwooder applicator sticksapprox 50Preparation1.Fill a beaker with de-ionized or distilled water to use forFIG.2FIG.3rinsing the electrode.undissolved2.Fill a second beaker to the 1/2 oz mark with pH 7 buffer.quinhydronea)To this buffer add the amount of quinhydrone that stayson about 1/4 inch(6 mm)of the wood applicator(seesketch).b)Use the wood applicator to stir the quinhydrone into thebuffer.c)A small amount of quinhydrone MUST remain undis-solved;if all the quinhydrone dissolves add a small100mL0mamount and stir.Repeat as necessary until a small amountof quinhydrone remains un-dissolved.3.Fill a third beaker to the 1/2 oz mark with pH 4 buffer.a)To this buffer add the amount of quinhydrone that stayson about 1/4 inch(6 mm)of the wood applicator(SEE FIG 1).b)Use the wood applicator to stir the quinhydrone into theFIG.4buffer (SEE FIG 2).PLATINUMORP ELECTRODE IN 7 BUFFER/QUINHYDRONE MIXTUREc)A small amount of quinhydrone MUST remain un-Temperature20C(68F)25C (77F)30C(86Fdissolved;See FIG 3 if all thequinhydrone dissolves addReadings (mV)8910783-10176-94a small amount and stir.Repeat as necessary until a smallReadings (pH)520-5.505.30-5605.42-5.72amount of quinhydrone remains un-dissolved.PLATINUM ORP ELECTRODE IN 4 BUFFER/QUINHYDRONE MIXTURER(V)20C(68F)25C77F)30C(86F260-287254-281247-274Readings (pH)2.15-2.602.25-2.702.37-2.82Parts covered by this product data sheet include:B125Page 1 of 2Form:InstrB12SCal [Rev:2011-03-24]2011 Sensorex Corporstion