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Orion 8003, 8165,8172, 8175Orion ROSS Sure-Flow®ElectrodesINSTRUCTION MANUALpH™Analyze •Detect•Measure •Control™

7pH CALIBRATION & MEASUREMENTGeneral Calibration ProcedureFor detailed calibration and temperature compensation procedures,consult your meter inst

Single Buffer Calibration1. Ensure that all buffers are at room temperature. If samples are at varying temperatures, temperaturecompensation is reco

Removal of Membrane/Junction Deposits When using the following procedures, do not immerse electrodemore than 1/4" above junction. Protein — Soak

Table 1pH Values of Buffers at Various TemperaturesNominal valueat 25 °TemperatureBuffer 0 °C 5 °C 10 °C 20 °C 30 °C1.68 1.67 1.67

TROUBLESHOOTINGTroubleshooting GuideFollowing is a systematic procedure to isolate the problem. The pH measuring systems can be divided into four comp

TechniqueIf trouble persists, review operating procedures. Reread calibrationand measurement sections, to be sure proper technique has beenfollowed. A

ELECTRODE CHARACTERISTICSTemperature EffectsThe most common cause of error in pH measurement is temperature.Ordinary electrodes drift with temperatur

InterferencesSodium ion is the principal interference for the pH electrode,causing increasing error at higher pH (lower hydrogen ion activities)and at

WARRANTYFor the most current warranty information, visit www.thermo.com.The Thermo Electron Corporation, Orion products warranty coversfailures due to

16210Aplus™, 230Aplus™, 250Aplus™, 290Aplus™, 410Aplus™,420Aplus™, 520Aplus™, 525Aplus™, 710Aplus™, 720Aplus™and920Aplus™), pHuture MMS™Meters (Orion

AQUAfast, Cahn, EZ Flash, Ionalyzer, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHix, pHuture, Pure Water, Sage, Sensing

17Six months from date of purchase by the user (or twelve monthsfrom date of shipment from Thermo) • Orion Flash Titration™Probe (Orion 092518), pHutu

18WHETHER THE CLAIMS ARE BASED IN CONTRACT, IN TORT(INCLUDING NEGLIGENCE), OR OTHERWISE WITH RESPECT TOOR ARISING OUT OF THE PRODUCT FURNISHED HEREUND

ORDERING INFORMATIONElectrodesOrion Description800300 ROSS™Sure-Flow®Reference Half Cell Electrode,Glass Body, with pin-tip connector8165BN ROSS Sure

20

21SPECIFICATIONSpH Range0 - 14DriftLess than 0.005 pH per dayTemperature Range0 to 100 °CInternal ReferenceROSS™JunctionSure-Flow®liquid-to-liquidSlop

NOTES22

227355-001 Rev. EEnvironmental InstrumentsWater AnalysisNorth America 166 Cummings CenterBeverly, MA 01915 USATel: 978-232-6000Dom. Fax: 978-232-60

TABLE OF CONTENTSGeneral Information 1Introduction 1 Required Equipment 2Required Solutions 2Using the Electrode 3Electrode Preparation 3 Sample Requ

1GENERAL INFORMATIONIntroductionThis manual contains instructions for the ROSS™Sure-Flow®Seriesof pH electrodes. Operation and maintenance instruction

Required EquipmentMeter — Any Orion pH or ion-selective meter, or other pH/lSEmeter with appropriate connectors. Electrode — Combination pH Electrode,

USING THE ELECTRODEElectrode Preparation1. Remove the protective shipping cap from sensing element andsave for storage.2. Clean any salt deposits fr

Sample RequirementsOne of the benefits of the ROSS™pH Electrodes is that the fillingsolution composition may be changed depending on samplerequirement

Placement of Removable Sleeve Bulb GuardThe bulb guard can be removed for cleaning or general measurement.Grasp bulb guard and gently pull. The bulb g

Measuring Hints See Figure 5.• Always use fresh buffers for calibration. Choose buffers thatare no more than 3 pH units apart. • Check electrode slo