pH Electrodes

Find the right pH electrode right here at a great low price. We offer a huge variety of brand name electrodes from Thermo Orion, Mettler Toledo, Milwaukee instruments and Ohaus. Call us if you need help selecting the right pH electrode for your application.
Showing 1 - 100 of 116 results
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Thermo Orion® Low Maintenance pH Electrodes

Low maintenance pH electrodes are easy to use and require minimal maintenance. Since the reference chamber is sealed, you never need to replace fill solution or clean and rinse the reference chamber. You may choose from many styles such as AquaPro, Green electrodes, double junction or silver chloride electrodes to suit your measurement needs. AquaPro low maintenance pH electrodes offer open junctions that do not clog. Choose between chemical resistant glass bodies or durable epoxy bodies. All AquaPro electrodes are TRIS compatible. Green electrodes contain no hazardous substances such as mercury or lead and are ROHS compliant. Double junction electrodes are TRIS compatible and you do not have to worry about interfering substances. Silver chloride electrodes offer low maintenance as well as reliable measurements for everyday use.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
9146BN 0-14 pH0.1 pH0-80°C
Your Price: $62.00
9106BNWP 0-14 pH0.05 pH0-80°C
Your Price: $105.10
GS9106BNWP 0-14 pH0.05 pH0-90°C
Your Price: $110.70
GD9106BNWP 0-14 pH0.02 pH0-90°C
Your Price: $137.20
9156DJWP 0-14 pH0.02 pH0-60°C
Your Price: $160.50
9104APWP 0-14 pH0.02 pH0-60°C
Your Price: $293.70
9156APWP 0-14 pH0.02 pH0-60°C
Your Price: $297.70

Thermo Orion® Glass Refillable pH Electrodes

Glass body electrodes offer superior chemical resistance. They are also able to withstand higher temperatures than epoxy electrodes, with some models able to be used up to 100 °C. Glass electrodes are also easy to clean as they are compatible with most solvents and inorganic materials. ROSS Ultra and ROSS electrodes provide unmatched ROSS accuracy and rapid response to temperature extremes. All are TRIS compatible. ROSS Ultra glass electrodes have an industry best 2 years warranty. AquaPro refillable electrodes are TRIS compatible and have a open junction that does not clog. Double junction electrodes are recommended for samples containing organic compounds, proteins, heavy metals and other compounds that interact with silver. Single junction electrodes provide a reliable option for routine pH measurement.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
9142BN 0-14 pH0.1 pH0-90°C
Your Price: $82.70
9102DJWP 0-14 pH0.02 pH0-60°C
Your Price: $182.20
9102BNWP 0-14 pH0.02 pH0-90°C
Your Price: $180.60
9104BNWP 0-14 pH0.02 pH0-90°C
Your Price: $208.60
8102SC 0-14 pH0.01 pH0-100°C
Your Price: $329.80
8102BN 0-14 pH0.01 pH0-100°C
Your Price: $349.10
8104SC 0-14 pH0.01 pH0-100°C
Your Price: $368.30
8162SC 0-14 pH0.01 pH0-100°C
Your Price: $371.50
8104BN 0-14 pH0.01 pH0-100°C
Your Price: $382.00
8102BNUWP 0-14 pH0.01 pH0-100°C
Your Price: $401.20
8104BNUWP 0-14 pH0.01 pH0-100°C
Your Price: $429.30

Mettler Toledo LE (Light Edition) pH Electrodes

The LightEdition (LE) sensors are tailor-made for high price/performance ratio. The offering includes sensors for all common applications and focuses on low maintenance and easy handling. It is the perfect match with the Five and Education Line meters.

SKU:
ModelMeasuring RangeTemp. Range
Price
Quantity
51340330 LE4070 - 14 pH0.0 - 80.0°C
Your Price: $93.30
51340331 LE4090 - 14 pH0.0 - 80.0°C
Your Price: $117.60
51340333 LE427-Puncture1 - 11 pH0.0 - 50.0°C
Your Price: $192.30
51340242 LE438 pH 3-in-10 - 14 pH0.0 - 80.0°C
Your Price: $164.30

Thermo Orion® Epoxy Refillable pH Electrodes

Epoxy body electrodes are ideal for field measurements or situations where they will be exposed to rugged handling. The electrode body surrounds the glass pH bulb providing further protection. ROSS Ultra and ROSS electrodes exhibit unmatched accuracy and rapid response to extreme temperature variations. All are TRIS compatible. The ROSS Ultra electrode has an unprecedented 2 year warranty. Green electrodes are the first lab electrode to contain no lead, mercury or other hazardous substances and are completely ROHS compliant. They are available in single or double junctions designs. Silver chloride epoxy electrodes provide excellent response and performance in routine samples.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
9156BNWP 0-14 pH0.02 pH0-90°C
Your Price: $140.40
GD9156BNWP 0-14 pH0.02 pH0-90°C
Your Price: $164.50
815600 0-14 pH0.01 pH0-100°C
Your Price: $349.10
8156BNUWP 0-14 pH0.01 pH0-100°C
Your Price: $398.00

Mettler Toledo pH Half-Cell and Reference Electrodes

Recommended for applications where the life time of the pH electrode is significantly shorter than that of the reference electrode.

SKU:
ModelMeasuring RangeTemp. Range
Price
Quantity
51343195 InLab®Mono0 - 14 pH0 - 100°C
Your Price: $152.10
51343196 InLab®Mono Pro0 - 12 pH0 - 130°C
Your Price: $297.70
51343190 InLab®ReferenceN/A0 - 100°C
Your Price: $148.40
51343192 InLab®Reference FlowN/A0 - 130°C
Your Price: $259.50
51343191 InLab®Reference ProN/A0 - 60°C
Your Price: $250.10

Thermo Orion® Epoxy Semi Micro pH Electrodes

Epoxy body semi-micro pH electrodes provide a rugged design. They are available in double junction or single junction designs as well as refillable or low-maintenance options. ROSS electrodes offer optimum accuracy and temperature response. AquaPro electrodes provide maintenancefree use. Silver chloride electrodes are for routine measurements.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
8175BNWP 0-14 pH0.01 pH0-100°C
Your Price: $430.10
8115BNUWP 0-14 pH0.01 pH0-100°C
Your Price: $434.90
911600 0-12 pH0.1 pH0-80°C
Your Price: $153.30
912600 0-12 pH0.1 pH0-80°C
Your Price: $239.90

Mettler Toledo InLab® pH Economy Electrodes

These InLab electrodes offer outstanding value for money. With their maintenance free gel electrolyte the InLab® Easy Din, Easy BNC and Easy are easy to use and ideal for places where this is a prerequisite, e.g. schools. The replaceable junctions of the InLab® Versatile and Versatile Pro prolong the lifetime of the electrode since they offer a solution to problem number one in pH measurement: a clogged diaphragm. Simply replace it by a new one!

SKU:
ModelMeasuring RangeTemp. Range
Price
Quantity
51343010 InLab®Easy0 - 14 pH0 - 80°C
Your Price: $157.70
51343013 InLab®Easy-3m0 - 14 pH0 - 80°C
Your Price: $197.87
51343011 InLab®Easy BNC0 - 14 pH0 - 80°C
Your Price: $157.70
51343030 InLab®Versatile0 - 14 pH0 - 100°C
Your Price: $209.07
51343031 InLab®Versatile Pro0 - 14 pH0 - 100°C
Your Price: $228.70

Mettler Toledo InLab® Routine pH Glass Electrodes

These InLab® electrodes are part of any classical lab equipment. They cover the majority of lab applications in aqueous media. The electrolyte in conventional Ag/AgCl reference systems must be saturated with silver chloride. With critical media, e.g. those containing sulfides or proteins, this will result in the diaphragm being contaminated with silver sulfide. This cannot happen with InLab® electrodes, which have an ARGENTHAL™ lead-off and silver ion trap thus ensuring that the electrolyte remains absolutely free from silver ions.

SKU:
ModelMeasuring RangeTemp. Range
Price
Quantity
51344055 InLab® Routine Pro ISM0 - 14 pH0 - 100°C
Your Price: $310.80
51344072 InLab® Science Pro ISM0 - 12 pH0 - 100°C
Your Price: $485.30
51343050 InLab®Routine0 - 14 pH0 - 100°C
Your Price: $179.20
51343054 InLab®Routine Pro0 - 14 pH0 - 100°C
Your Price: $266.00
51343057 InLab®Routine Pro-L0 - 14 pH0 - 100°C
Your Price: $375.20
51343053 InLab®Routine-L0 - 14 pH0 - 100°C
Your Price: $183.87

Thermo Orion® pH Half Cell and Reference Half Cell Electrodes

pH half cells require the use of a reference half cell electrode. Reference half cells are for use with either a pH half cell sensing electrode or an ISE half cell reference electrode. They are available as single or double reference designs. Clog free Sure-flow junctions are also available extending the life of your electrode. Ross half cells should be paired together. 900100 and 900200 are silver chloride references for pH and ISE electrodes.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
8101BNWP 0-14 pH0.01 pH0-100°C
Your Price: $250.40
800500U 0-14 pHn/a0-100°C
Your Price: $266.40
900200 0-14 pHn/a0-100°C
Your Price: $214.30
900100 0-14 pHn/a0-100°C
Your Price: $183.80

Mettler Toledo InLab® Professional pH Electrodes

These electrodes are a METTLER TOLEDO success story! With their open junctions these electrodes are particularly insensitive to contamination. The polymeric reference electrolyte XEROLYT® on these sensors is in direct contact wit the measured medium, hence there is no junction to block. The PEEK shaft is both chemically and mechanically extremely resistant.

SKU:
ModelMeasuring RangeTemp. Range
Price
Quantity
51340289 InLab®413 SG-10m0 - 14 pH0 - 80°C
Your Price: $375.20
51343100 InLab®Expert0 - 14 pH0 - 100°C
Your Price: $191.30
51343102 InLab®Expert-2m0 - 14 pH0 - 100°C
Your Price: $327.60
51343104 InLab®Expert NTC300 - 14 pH0 - 100°C
Your Price: $265.10
51344102 InLab®Expert Pro-ISM-IP670 - 14 pH0 - 100°C
Your Price: $358.40

Thermo Orion® Flat Surface pH Electrodes

Flat surface electrodes are epoxy body electrodes with a flat pH bulb that allow you to measure moist solid samples or small volumes. They can be uses on samples such as meats, cheese or in agar gel plates. Flat surface pH electrodes are available in single or double junction designs allowing you to measure samples such as TRIS buffers or samples containing protein, sulfides or other compounds that react with silver. You may also choose from refillable or low maintenance designs. Thermo Scientific Orion ROSS Ultra and ROSS flat surface electrodes provide optimum accuracy and stability while being TRIS compatible. The ROSS Ultra flat surface electrode has a 2 year warranty. The AquaPro flat surface electrode is TRIS compatible and has an open junction that does not clog. The 9135APWP AquaPro flat surface electrode is a low maintenance model never requiring fill solution. The silver chloride 913600 flat surface electrode is a low maintenance electrode that is ideal for routine measurements.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
8135BNUWP 0-14 pH0.01 pH0-100°C
Your Price: $487.10
8135BN 0-14 pH0.01 pH0-100°C
Your Price: $421.30
8135SC 0-14 pH0.01 pH0-100°C
Your Price: $427.00
9135APWP 0-14 pH0.02 pH0-60°C
Your Price: $320.20
913600 0-14 pH0.1 pH0-80°C
Your Price: $195.80

Thermo Orion® Micro pH Electrodes

Micro electrodes are designed to measure small volumes down to 0.5 µL. These are extremely delicate electrodes because of their size and should be treated as such. The small stem and bulb diameter allow the electrode to be inserted into small devices such as 384 microwell plates. There are are a variety to choose from based on your measurement needs. The ROSS 8220BNWP micro electrode provides the best accuracy and response time of the micro electrodes. It can be used in biological samples. The 8220BNWP is more durable than the silver chloride electrodes. Silver chloride micro electrodes are single junction electrodes. They are avaiable to measure samples as small as 0.5 µL, for use in NMR tubes and available with a stainless steel needle tip over the glass stem and bulb. The double junction micro electrode is for moderate size samples. The double junction design is good for use when measuring TRIS samples, proteins, sulfides or biologicals.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
8220BNWP 0-14 pH0.01 pH0-100°C
Your Price: $492.70
9810BN 0-14 pH0.02 pH0-80°C
Your Price: $455.00
9826BN 0-14 pH0.02 pH0-80°C
Your Price: $447.80
9863BN 0-14 pH0.02 pH0-80°C
Your Price: $479.90
9110DJWP 0-14 pH0.02 pH0-60°C
Your Price: $203.80

Thermo Orion Triode pH Electrodes

All Thermo Scientific Orion Triodes™ have built-in temperature sensors allowing you to measure pH and temperature with one electrode. There are a variety of electrodes based on your sample and application. The ROSS Ultra Triodes offer such great stability and drift that the warranty period is double other electrodes.The refillable electrodes have a two year replacement warranty. The gel-filled ROSS Ultra Triode electrodes have an 18 month warranty. Complex samples, such as biological media, foods and pharmaceuticals, can be measured easily. All ROSS Ultra electrodes can be used in samples that contain TRIS, sulfides or proteins. ROSS Ultra electrodes offer the best temperature performance of all other electrodes in repeated, varying temperatures. The AquaPro Triode has the advantage of having an open junction that does not clog and double junction reference. For use in samples with TRIS, protein and sulfides. Ag/AgCl Triodes have good response and are ideal for routine measurements.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
8302BNUMD 0-14 pH0.01 pH0-100°C
Your Price: $467.80
8107BNUMD 0-14 pH0.01 pH0-80°C
Your Price: $397.20
8107UWMMD 0-14 pH0.01 pH0-80°C
Your Price: $407.70
8157BNUMD 0-14 pH0.01 pH0-100°C
Your Price: $463.80
5107BNMD 0-14 pH0.01 pH0-100°C
Your Price: $329.80
9107APMD 0-14 pH0.02 pH0-100°C
Your Price: $230.30
9107BNMD 0-14 pH0.02 pH0-60°C
Your Price: $216.70
9107WMMD 0-14 pH0.02 pH0-80°C
Your Price: $229.50
9107WLMD 0-14 pH0.02 pH0-80°C
Your Price: $240.70
9109WP 0-14 pH0.02 pH0-80°C
Your Price: $205.40
9109WL 0-14 pH0.02 pH0-80°C
Your Price: $231.10
9157BNMD 0-14 pH0.02 pH0-90°C
Your Price: $303.30

Thermo Orion Sure-Flow pH Electrodes

The unique, free-flowing liquid-to-liquid junction assures you of the most stable, drift-free measurements. The easy-to-clean junction never clogs, simply press the cap and flush the junction area. Release the cap and the junction is reset. Now even the most problematic, dirty or viscous samples can be easily measured without a clogged junction! The Sure-Flow junction has proven reliability and extends the electrode life. ROSS electrodes provide unmatched accuracy and response to extreme temperature changes. They are compatible with samples containing organic compounds, proteins, heavy metals, and other compounds that react with silver such as bromides, iodides, cyanides and sulfides. Silver chloride sure-flow electrodes can be used on tough samples that do not require a double junction electrode to prevent contact with silver.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
8172BNWP 0-14 pH0.01 pH0-100°C
Your Price: $427.70
8165BNWP 0-14 pH0.01 pH0-100°C
Your Price: $417.30
9172BNWP 0-14 pH0.01 pH0-100°C
Your Price: $244.00
9165BNWP 0-14 pH0.01 pH0-100°C
Your Price: $237.50

Thermo Orion® Glass Semi Micro pH Electrodes

Glass body semi-micro pH electrodes provide superior chemical resistance and can withstand high temperatures extremes. There are a variety of options to choose from. ROSS Ultra and ROSS semi-micro pH electrodes provide optimum accuracy and unmatched response in samples of varying temperatures. They are available in chemical resistant glass bodies. All ROSS electrodes are TRIS compatible. AquaPro semi-micro electrodes have a clog free open junction and are TRIS compatible. Silver chloride semi-micro electrodes are durable and provide reliable and accurate measurements of routine samples.

SKU:
Measuring RangePrecisionTemperature Range
Price
Quantity
9103BNWP 0-14 pH0.02 pH0-90°C
Your Price: $260.80
8103SC 0-14 pH0.01 pH0-100°C
Your Price: $450.20
8103BN 0-14 pH0.01 pH0-100°C
Your Price: $462.20
8103BNUWP 0-14 pH0.01 pH0-100°C
Your Price: $509.60

Mettler Toledo InLab® pH Specialists

These electrodes are either extreme specialists or top generalists. The InLab® Solids puncture electrode has been designed for pH measurement of foodstuff like fruit, cheese or meat.The InLab® Surface has been designed to carry out pH measurements on surfaces, such as paper or skin. It is also ideal for measuring drop-sized samples on glass substrates. Whatever you are looking for, you will find it here.

SKU:
ModelMeasuring RangeTemp. Range
Price
Quantity
59902985 403-34-S7/165 Flat0 - 12 pH0 - 80°C
Your Price: $466.67
59904591 405-60-T-S7/120/98480 - 12 pH0 - 100°C
Your Price: $320.10
59904764 HA425-60-S7/600 Extra long0 - 14 pH0 - 130°C
Your Price: $574.00
51343164 InLab® Flex-Micro0 - 14 pH0 - 80°C
Your Price: $413.50
51344172 InLab® Pure Pro ISM1 - 11 pH0 - 80°C
Your Price: $461.10
51344155 InLab® Solids Pro ISM1 - 11 pH0 - 80°C
Your Price: $387.30
51343163 InLab® Ultra-Micro1 - 11 pH0 - 80°C
Your Price: $329.47
51343151 InLab® Viscous Pro0 - 14 pH0 - 100°C
Your Price: $616.00
51343174 InLab®Cool1 - 11 pH-30 - 80°C
Your Price: $346.30
51343176 InLab®Hydrofluoric1 - 11 pH0 - 100°C
Your Price: $378.00
51343160 InLab®Micro0 - 14 pH0 - 80°C
Your Price: $281.90
51343162 InLab®Micro Pro0 - 14 pH0 - 100°C
Your Price: $466.67
51343170 InLab®Pure1 - 11 pH0 - 80°C
Your Price: $284.67
51343171 InLab®Pure Pro1 - 11 pH0 - 80°C
Your Price: $435.87
51343060 InLab®Reach0 - 14 pH0 - 100°C
Your Price: $400.40