Search Thermo Fisher Scientific
Search Thermo Fisher Scientific
The Thermo Scientific electrodes portfolio spans a vast range of industries and applications, and are categorized into digestible classifications to help you choose which electrode is best for your application.
Browse our complete portfolio or let one of our experts help you make a selection.
ROSS | |
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Triode | |
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Sure-Flow | |
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Standard size | |
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Semi-micro | |
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Micro | |
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Rugged bulb | |
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Spear tip | |
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Flat surface tip | |
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Sure-flow, sleeve, and laser-drilled hole (open) | |
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Ceramic and glass capillary | |
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Wick and glass fiber | |
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ROSS reference |
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Double junction Ag/AgCl reference |
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Single junction Ag/AgCl reference |
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Refillable | |
pH Refillable Glass Electrodes › | |
Polymer filled (sealed) | |
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Gel filled (sealed) | |
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Glass body | |
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Epoxy body | |
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Waterproof BNC | |
Compatible with any pH meter that has a BNC input; ensures a waterproof and secure connection with the Thermo Scientific Orion Star A series meters | |
BNC | |
Compatible with any pH meter that has a BNC input | |
Screw cap | |
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Pin tip | |
Compatible with meters that have a reference half-cell input |
MiniDIN | |
Compatible with Thermo Scientific pH meters that have an 8-pin MiniDIN ATC input | |
8-pin DIN | |
Compatible with the Thermo Scientific Orion Star A meters and pH meters that have an 8-pin DIN ATC input | |
RCA | |
Compatible with Mettler Toledo™ pH meters that have an RCA input |
Cat. No. | Description |
927005MD | Epoxy ATC probe, MiniDIN |
927006MD | Glass ATC probe, MiniDIN |
927007MD | Stainless steel ATC probe, MiniDIN |
928007MD | Micro ATC probe with stainless steel 1 mm x 38 mm tip, MiniDIN |
917005 | Epoxy ATC probe, 8 Pin DIN |
917007 | Stainless steel ATC probe, 8-pin DIN |
927005 | Epoxy ATC probe, 3.5 mm phono tip |
ROSS | |
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Triode | |
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Sure-Flow | |
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Standard size | |
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Semi-micro | |
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Micro | |
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Rugged bulb | |
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Spear tip | |
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Flat surface tip | |
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Sure-flow, sleeve, and laser-drilled hole (open) | |
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Ceramic and glass capillary | |
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Wick and glass fiber | |
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ROSS reference |
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Double junction Ag/AgCl reference |
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Single junction Ag/AgCl reference |
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Refillable | |
pH Refillable Glass Electrodes › | |
Polymer filled (sealed) | |
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Gel filled (sealed) | |
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Glass body | |
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Epoxy body | |
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Waterproof BNC | |
Compatible with any pH meter that has a BNC input; ensures a waterproof and secure connection with the Thermo Scientific Orion Star A series meters | |
BNC | |
Compatible with any pH meter that has a BNC input | |
Screw cap | |
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Pin tip | |
Compatible with meters that have a reference half-cell input |
MiniDIN | |
Compatible with Thermo Scientific pH meters that have an 8-pin MiniDIN ATC input | |
8-pin DIN | |
Compatible with the Thermo Scientific Orion Star A meters and pH meters that have an 8-pin DIN ATC input | |
RCA | |
Compatible with Mettler Toledo™ pH meters that have an RCA input |
Cat. No. | Description |
927005MD | Epoxy ATC probe, MiniDIN |
927006MD | Glass ATC probe, MiniDIN |
927007MD | Stainless steel ATC probe, MiniDIN |
928007MD | Micro ATC probe with stainless steel 1 mm x 38 mm tip, MiniDIN |
917005 | Epoxy ATC probe, 8 Pin DIN |
917007 | Stainless steel ATC probe, 8-pin DIN |
927005 | Epoxy ATC probe, 3.5 mm phono tip |
Performance for quality control and research | Performance precision pH with durability | Piercing semi-solid samples | Performance reference half-cell | |
ROSS Ultra combination glass body extended life pH electrode | ROSS Ultra combination epoxy body pH electrode | ROSS combination glass body pH electrode with spear tip | ROSS Ultra glass body reference half-cell | |
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Product SKU number | 8102BNUWP | 8156BNUWP | 8163BNWP | 800500U |
pH Range | 0-14 | 0-14 | 0-14 | 0-14 |
pH Precision | 0.01 | 0.01 | 0.01 | --- |
Temp. Range | 0-100°C | 0-100°C | 0-100°C | 0-100°C |
Internal Reference | ROSS | ROSS | ROSS | ROSS |
Junction | Ceramic | Glass Fiber | Ceramic | Ceramic |
Fill Solution (Cat. No.) | 3 M KCl (810007) | 3 M KCl (810007) | 3 M KCl (810007) | 3 M KCl (810007) |
Dimension D (Dia) L (Length) T (Tip) | L - 120 mm | L - 120 mm | L - 120 mm | L - 120 mm |
Connector Type | BNC Waterproof | BNC Waterproof | BNC Waterproof Screw Cap | Pin Tip |
Top performance with glass body | Low maintenance with extended life | Refillable, convenient, and durable | Maintains calibration for 1 year | |
ROSS Ultra pH/ATC Triode with glass body | ROSS Ultra pH/ATC Triode with epoxy body, low maintenance gel | ROSS Ultra pH/ATC Triode with epoxy body | Orion No-Cal pH/ATC Triode with epoxy body | |
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Product SKU number | 8302BNUMD(star) | 8107BNUMD (star)* 8107UWMMD (star) | 8157BNUMD(star)* | |
pH range | 0–14 | 0–14 | 0–14 | 0–14 |
pH precision | 0.01 | 0.01 | 0.02 | 0.01 |
Temp. range | 0–100°C | 0–100°C | 0–100°C | 0–100°C |
Internal reference | ROSS | ROSS | ROSS | Platinum |
Junction | Ceramic | Glass capillary | Glass fiber | Ceramic |
Fill solution (SKU no.) | 3 M KCl (810007) | -- | 3 M KCl (810007) | -- |
Dimension D (Dia) L (Length) T (Tip) | L—120 mm | L—120 mm | L—120 mm | L—120 mm D—12 mm |
Connector type | BNC waterproof—mini-DIN (star) | BNC waterproof—mini-DIN (star)* | BNC waterproof—mini-DIN (star)* BNC waterproof—mini-DIN (star)* 3 m | BMC waterproof—mini-DIN |
We have an of extensive inventory of Triode Electrodes also available › |
High performance in all samples | Fast response – even in difficult samples | For all samples including solvents | Fast response in difficult samples & soils | |
ROSS Sure-Flow combination pH electrode with glass body | ROSS Sure-Flow combination pH electrode with epoxy body | Sure-Flow combination pH electrode with glass body | Sure-Flow combination pH electrode with epoxy body | |
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Product SKU number | 8172BNWP | 8165BNWP | 9172BNWP | 9165BNWP |
pH Range | 0-14 | 0-14 | 0-14 | 0-14 |
pH Precision | 0.01 | 0.01 | 0.02 | 0.02 |
Temp. Range | 0-100°C | 0-100°C | 0-100°C | 0-100°C |
Internal Reference | ROSS | ROSS | Ag/AgCl | Ag/AgCl |
Junction | Sure-Flow | Sure-Flow | Sure-Flow | Sure-Flow |
Fill Solution (Cat. No.) | 3 M KCl (810007) | 3 M KCl (810007) | 4 M KCl w/ Ag/AgCl (900011) | 4 M KCl w/ Ag/AgCl (900011) |
Dimension D (Dia) L (Length) T (Tip) | L - 120 mm | L - 120 mm | L - 120 mm | L - 120 mm |
Connector Type | BNC Waterproof | BNC Waterproof | BNC Waterproof | BNC Waterproof |
Increase your productivity by adding accessories to your benchtop or portable meter. Meter Accessories › |
Sustainably created Silver/Silver Chloride Electrode for daily use | General Purpose Combination Silver/Silver Chloride Electrode | Economy Silver/Silver Chloride Electrode for routine measurements | |
Orion Green pH Combination Electrode | Orion Combination pH Electrode | Orion Economy pH Combination Electrode | |
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Product SKU number | GD9106BNWP | 9102BNWP | 913600 |
pH Range | 0-14 | 0-14 | 0-12 |
Temp. Range | 0°C to 80°C | 0°C to 90°C | 0°C to 80°C |
Junction | Wick | Ceramic | Wick |
Filling | Orion Ag/AgCl double-junction filling solution | Orion Ag/AgCl electrode filling solution | Permanently gelled Ag/AgCl electrolyte |
Material | Epoxy body, Ag/AgCl reference | Glass body, Ag/AgCl reference | Epoxy body, Ag/AgCl electrolyte |
Refillable | Yes | Yes | No |
Dimension D (Dia) L (Length) T (Tip) | L – 11 cm | L – 12 cm D – 12 mm | L – 11 cm D – 12 mm |
Connector Type | Waterproof BNC | Waterproof BNC | Waterproof BNC |
Performance for quality control and research | Performance precision pH with durability | Piercing semi-solid samples | Performance reference half-cell | |
ROSS Ultra combination glass body extended life pH electrode | ROSS Ultra combination epoxy body pH electrode | ROSS combination glass body pH electrode with spear tip | ROSS Ultra glass body reference half-cell | |
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Product SKU number | 8102BNUWP | 8156BNUWP | 8163BNWP | 800500U |
pH Range | 0-14 | 0-14 | 0-14 | 0-14 |
pH Precision | 0.01 | 0.01 | 0.01 | --- |
Temp. Range | 0-100°C | 0-100°C | 0-100°C | 0-100°C |
Internal Reference | ROSS | ROSS | ROSS | ROSS |
Junction | Ceramic | Glass Fiber | Ceramic | Ceramic |
Fill Solution (Cat. No.) | 3 M KCl (810007) | 3 M KCl (810007) | 3 M KCl (810007) | 3 M KCl (810007) |
Dimension D (Dia) L (Length) T (Tip) | L - 120 mm | L - 120 mm | L - 120 mm | L - 120 mm |
Connector Type | BNC Waterproof | BNC Waterproof | BNC Waterproof Screw Cap | Pin Tip |
Top performance with glass body | Low maintenance with extended life | Refillable, convenient, and durable | Maintains calibration for 1 year | |
ROSS Ultra pH/ATC Triode with glass body | ROSS Ultra pH/ATC Triode with epoxy body, low maintenance gel | ROSS Ultra pH/ATC Triode with epoxy body | Orion No-Cal pH/ATC Triode with epoxy body | |
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Product SKU number | 8302BNUMD(star) | 8107BNUMD (star)* 8107UWMMD (star) | 8157BNUMD(star)* | |
pH range | 0–14 | 0–14 | 0–14 | 0–14 |
pH precision | 0.01 | 0.01 | 0.02 | 0.01 |
Temp. range | 0–100°C | 0–100°C | 0–100°C | 0–100°C |
Internal reference | ROSS | ROSS | ROSS | Platinum |
Junction | Ceramic | Glass capillary | Glass fiber | Ceramic |
Fill solution (SKU no.) | 3 M KCl (810007) | -- | 3 M KCl (810007) | -- |
Dimension D (Dia) L (Length) T (Tip) | L—120 mm | L—120 mm | L—120 mm | L—120 mm D—12 mm |
Connector type | BNC waterproof—mini-DIN (star) | BNC waterproof—mini-DIN (star)* | BNC waterproof—mini-DIN (star)* BNC waterproof—mini-DIN (star)* 3 m | BMC waterproof—mini-DIN |
We have an of extensive inventory of Triode Electrodes also available › |
High performance in all samples | Fast response – even in difficult samples | For all samples including solvents | Fast response in difficult samples & soils | |
ROSS Sure-Flow combination pH electrode with glass body | ROSS Sure-Flow combination pH electrode with epoxy body | Sure-Flow combination pH electrode with glass body | Sure-Flow combination pH electrode with epoxy body | |
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Product SKU number | 8172BNWP | 8165BNWP | 9172BNWP | 9165BNWP |
pH Range | 0-14 | 0-14 | 0-14 | 0-14 |
pH Precision | 0.01 | 0.01 | 0.02 | 0.02 |
Temp. Range | 0-100°C | 0-100°C | 0-100°C | 0-100°C |
Internal Reference | ROSS | ROSS | Ag/AgCl | Ag/AgCl |
Junction | Sure-Flow | Sure-Flow | Sure-Flow | Sure-Flow |
Fill Solution (Cat. No.) | 3 M KCl (810007) | 3 M KCl (810007) | 4 M KCl w/ Ag/AgCl (900011) | 4 M KCl w/ Ag/AgCl (900011) |
Dimension D (Dia) L (Length) T (Tip) | L - 120 mm | L - 120 mm | L - 120 mm | L - 120 mm |
Connector Type | BNC Waterproof | BNC Waterproof | BNC Waterproof | BNC Waterproof |
Increase your productivity by adding accessories to your benchtop or portable meter. Meter Accessories › |
Sustainably created Silver/Silver Chloride Electrode for daily use | General Purpose Combination Silver/Silver Chloride Electrode | Economy Silver/Silver Chloride Electrode for routine measurements | |
Orion Green pH Combination Electrode | Orion Combination pH Electrode | Orion Economy pH Combination Electrode | |
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Product SKU number | GD9106BNWP | 9102BNWP | 913600 |
pH Range | 0-14 | 0-14 | 0-12 |
Temp. Range | 0°C to 80°C | 0°C to 90°C | 0°C to 80°C |
Junction | Wick | Ceramic | Wick |
Filling | Orion Ag/AgCl double-junction filling solution | Orion Ag/AgCl electrode filling solution | Permanently gelled Ag/AgCl electrolyte |
Material | Epoxy body, Ag/AgCl reference | Glass body, Ag/AgCl reference | Epoxy body, Ag/AgCl electrolyte |
Refillable | Yes | Yes | No |
Dimension D (Dia) L (Length) T (Tip) | L – 11 cm | L – 12 cm D – 12 mm | L – 11 cm D – 12 mm |
Connector Type | Waterproof BNC | Waterproof BNC | Waterproof BNC |
Your simple aqueous pH measurements are used to qualify a sample's acidity as part of general laboratory use and requirements.
Use these pH electrodes for general purpose, simple pH samples.
All electrodes are suitable for general purpose measurements.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 9107BNMD [E] 8107BNUMD [E] | |
Low maint & rugged epoxy body | GD9106BNWP[E] | 9106BNWP [E] GS9106BNWP [E] |
Long life & chemical resistant | 8102BN [G] 8102BNUWP [G] | 9102BNWP [G] 9102DJWP [G] |
Clog-resistant | 8172BNWP [G] 8165BNWP [E] | GS9106BNWP [E] 9172BNWP [G] 9165BNWP [E] |
Rugged bulb & chemical resistant | 8104BN [G] 8104BNUWP [G] | 9104BNWP [G] 9162BNWP [G] |
The atmosphere you work in calls for rugged design that ensures accuracy in harsh environments, as precision in real-time sample testing crucial. pH electrodes recommended for field use and plant samples should have an epoxy body for added durability and be polymer or gel filled for easy maintenance.
Use pH electrodes for field use and plant samples for water (lakes, ponds, streams, rivers, etc.), wastewater, food manufacturing, cosmetics, pulp and paper, petrochemicals, and more.
Electrodes for field use or plant samples should have an epoxy body for added durability for harsh environments and be polymer or gel filled for easy maintenance.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8302BNUMD [G] | 9107BNMD [E] 8107BNUMD [E] |
Low maint & rugged epoxy body | GD9106BNWP[E] 8107BNUMD [E] | 9106BNWP[E] GS9106BNWP [E] |
Long life & chemical resistant | 8102BN [G] 8102BNUWP [G] | 9102BNWP [G] 9102DJWP [G] |
Clog-resistant | 8172BNWP [G] 8165BNWP [E] | GS9106BNWP [E] 9172BNWP [G] 9165BNWP [E] |
Rugged bulb & chemical resistant | 8104BN [G] 8104BNUWP [G] | 9104BNWP [G] 9162BNWP [G] |
Sample preparation is a critical part of your testing workflow—accurate and reproducible measurements are imperative. For the early stages of research, pH electrodes recommended for biological and pharmaceutical use should have a ROSS and double junction Ag/AgCl reference (no sample contact with silver) or be TRIS compatible.
Use pH electrodes for biological and pharmaceutical applications and sample preparation specific to DNA, RNA, TRIS buffers, media, buffer preparation, proteins, enzymes, research, and more.
Electrodes should have a ROSS or double junction Ag/AgCl reference (no sample contact with silver)
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8302BNUMD [G] 8157BNUMD [E] | 8302BNURCA [G] 8157BNURCA [E] 8107BNUMD [E] 8107BNURCA [E] |
Long life & chemical resistant | 8102BNUWP [G] | 9102DJWP [G] 8102BN [G] |
Semi-micro size | 8103BN [G] 8103BNUWP [G] | 911600 [E] 9110DJWP [G] 8115BN[E] 8115BNUWP [E] |
Micro size | 8220BNWP [G] | 9810BN [G] 9863BN [--] |
Titrations | 8172BNWP [G] | 9172BNWP [G] 8162SC [G] |
Equip your classroom or academic lab with electrodes our future lab technicians can use every day. For teaching applications, recommended pH electrodes should have an epoxy body for added durability, semester after semester. For advanced academic use, glass-body electrodes can be selected if they fit the application.
Use pH electrodes for academic and student use in general chemistry, water ecology or environmental testing, field use, and more.
Electrodes should have an epoxy body for added durability in rugged classroom environments. Advancing to glass-body electrodes will permit the use of micro, semi-micro, and specialized electrodes in a more delicate setting.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8107BNUMD [E] 8157BNUMD [E] | 9107BNMD [E] 9157BNMD [E] |
Low maint & rugged epoxy body | GD9106BNWP [E] | 9106BNWP [E] GS9106BNWP [E] |
Long life & chemical resistant | 8102BNUWP [G] | 9102BNWP [G] 9172BNWP [G] |
Rugged bulb & chemical resistant | 8104BN [G] 8104BNUWP [G] | 9104BNWP [G] 9104APWP [G] |
Achieving repeatable and reliable sample analysis results through the automated method of titration is key. pH electrodes recommended for use with titration should have a Sure-Flow or sleeve junction for better contact with the samples to provide stable measurements.
Use these pH electrodes when measuring acidity using direct titration, alkalinity, total acidic number, total base number, and for basic R&D work.
Electrodes should have Sure-Flow or sleeve junction for better contact with the sample and more stable measurements.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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General titrations | 8172BNWP [G] | 9172BNWP [G] 8162SC (need cable) [G] |
Non-aqueous titrations | 8172BNWP [G] | 9172BNWP [G] 8162SC (need cable) [G] |
As a brewer, winemaker, cheesemaker, or yogurt technician, accurate sample analysis and quality control are essential to your day-to-day functions, ensuring results that meet regulations and product development requirements. pH electrodes recommended for food and beverage applications should have a flat-surface tip and ROSS or double junction Ag/AgCl reference (no sample contact with silver), or a spear tip for piercing samples and a ROSS or double junction Ag/AgCl reference.
Use pH electrodes for food and beverage applications when testing beer, wine, semi-solids, meat, cheese, juice, carbonated beverages, and much more. Testing could be executed in QC/QA labs or during product development.
Electrodes should have a Sure-Flow or open junction to prevent the electrode from clogging.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8107BNUMD [E] | 8302BNUMD [G] 8157BNUMD [E] |
Sauces, jams, salad dressing, dairy | 8172BNWP [G] | 9165BNWP [E] 9172BNWP [G] |
High temperatures—pH & temp | 8302BNUMD (100°C) [G] | 9107BNMD (80°C) [E] 9157BNMD (90°C) [E] |
Your petrochemical and non-aqueous sample types can be challenging, resulting in unstable readings or drifts. pH electrodes recommended for petrochemical and non-aqueous applications should have a ROSS Sure-Flow or open junction to prevent clogging.
Use pH electrodes for these applications when testing paints, inks, petroleum products, engine coolant, bioethanol, and alcohol, among others.
Electrodes should have a glass body that resists damage from the sample and a Sure-Flow or open junction to prevent the electrode from clogging.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8165BNWP [E] | 9107BNMD [E] 9157BNMD [E] |
Low maint & rugged epoxy body | 9165BNWP [E] | 9106BNWP [E] GS9106BNWP [E] |
Long life & chemical resistant | 8172BNWP [G] | 9102BNWP [G] 9172BNWP [G] |
Rugged bulb & chemical resistant | 9107APMD [E] | 8104BN [G] 9104BNWP [G] 8162BNWP [G] |
Ionic strength is an important factor in many processes. High-ionic-strength solutions change the liquid junction potential; to ensure the best performance with extreme pH and brine sample types, the pH electrodes recommended for use are ROSS Sure-Flow or open junction electrodes.
Use the following pH electrodes when measuring samples with extreme pH or high salt content.
Electrodes should have a Sure-Flow or open junction for better contact with the sample and more stable measurements.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8302BNUMD [G] | 9157BNMD [E] 8157BNUMD [E] |
Easy maintenance, flushable junction | 8172BNWP [G] 8165BNWP [G] | 9172BNWP [G] 9165BNWP [E] |
Rugged epoxy body | 8165BNWP [E] 8156BNUWP [E] | 8156BNWP [E] GD9156BNWP [E] |
HF (hydrofluoric acid) | 8172BNWP [G] 8104BNWP [G] | 9106BNWP [E] 9104APWP [G] 8104BN [G] |
Chemical validation and quality control of air and water in your industrial and chemical applications is essential to your plant’s performance. pH electrodes recommended for use in industrial and chemical applications should have a glass body that resists damage from the sample and a Sure-Flow or open junction to prevent the electrode from clogging and to help provide better contact with the sample.
Use pH electrodes for industrial and chemical applications specific to chemical validation, quality control and assurance of production, and more.
Electrodes should have a glass body that resists damage from the sample and a Sure-Flow or open junction to prevent the electrode from clogging.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8302BNUMD [G] | 9107BNMD [E] 9157BNMD [E] |
Extreme pH (<2 or >12) & Brines | 8172BNWP [G] | GD9106BNWP [E] 9172BNWP [E] |
Viscous—slurry, emulsion, wet sludge | 8172BNWP [G] | 9104APWP[G] 9172BNWP [G] |
Flat surface—paper, dewatered sludge, textiles | 8135BN [E] 8135BNUWP [E] | 913600 [E] 9135APWP [E] |
Sample analysis in quality control and quality assurance labs needs consistent validation for products to meet regulations and product development requirements. pH electrodes recommended for consumer products applications should have a Sure-Flow or open junction to prevent the electrode from clogging.
Use pH electrodes for consumer products applications when testing cosmetics, lotions, oils, baby products, health products, and much more.
Electrodes should have a glass body that resists damage from the sample and a Sure-Flow or open junction to prevent the electrode from clogging.
[G] = Glass body
[E] = Epoxy body
Whether you’re in the field looking for environmental changes or you’re researching sprays and pesticides that affect the general population, real-time sample analysis is vital on-the-go. pH electrodes recommended for environmental applications should have a ROSS or double junction Ag/AgCl reference, an epoxy body for added durability, and be refillable for better contact with the sample.
Use pH electrodes for environmental applications including seawater, rivers, streams, lakes, runoffs, rain water, soil, and more.
Electrodes should have an epoxy body for durable applications; they should also have a ROSS or double junction Ag/Ag/Cl reference and be refillable for better contact with the sample.
[G] = Glass body
[E] = Epoxy body
Using clean or pure water to dilute and validate samples is essential in an everyday lab setting. Recommended pH electrodes should be ROSS or double junction Ag/AgCl reference and be refillable for better contact with the sample.
Use pH electrodes for clean and pure water applications during general laboratory measurements for diluting samples and more.
[G] = Glass body
[E] = Epoxy body
Featured electrodes | Also available | |
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pH & temperature | 8302BNUMD [G] 8107BNUMD [E] | 9107BNMD [E] |
Low maint & rugged epoxy body | GD9106BNWP [E] | 9106BNWP [E] GS9106BNWP [E] |
Long life & chemical resistant | 8102BN [G] 8102BNUWP [G] | 9102BNWP [G] 9102DJWP [G] |
Clog-resistant | 8172BNWP [G] 8165BNWP [E] | GS9106BNWP[E] 9172BNWP [G] 9165BNWP [E] |
Rugged bulb & chemical resistant | 8104BN [G] 8104BNUWP [G] | 9104BNWP [G] 9162BNWP [G] |
Using high-quality solutions to calibrate and maintain your sensors is the best way to ensure your data is both accurate and reproducible. When choosing buffers and solutions for pH measurement, pay attention to the quality of the water and chemicals used. Use USP grade water whenever possible.
Avoid using low-quality, reconstituted, or expired buffers. These can lead to measurement errors, which require lengthy troubleshooting, or may go unnoticed. Our bottles of buffers have a safety seal to eliminate leaking during shipment and as a tamper-proof measure.
We offer pH buffers and test kits for a variety of applications. All Orion pH buffers and standards are traceable to NIST reference materials and are available in a variety of sizes ranging from 15 mL single-use pouches to large-volume 19 L cubitainers.
All Orion pH buffer bottles have pH/temperature tables printed on the labels for accurate calibrations and NIST traceability. Manufactured under ISO 9000 quality standards.
Buffer color codes:
This useful guide illustrates how pH buffer values differ according to temperature.
All Orion pH buffer bottles have pH/temperature tables printed on the labels for accurate calibrations and NIST traceability, manufactured under ISO 9000 quality standards. The buffers are available in pint (475 mL) bottles, portable five packs of 2 oz. (5 x 60 mL) bottles, convenient All-in-One buffer kits, 5 gallon (19 L) cubitainers, and single-use pouches. See the table below to identify which size buffers and standards are necessary for your applications.
Laboratory | Field | Pharmaceutical | Single use | Food and beverage | |
15 mL (0.5 oz.) individual use pouches > available in 10 pack or 25 pack boxes | ✓ | ✓ | ✓ | ✓ | ✓ |
60 mL (2 oz.) bottle > available in 5 pack box | ✓ | ✓ | ✓ | ✓ | |
475 mL (1 pint) bottle | ✓ | ✓ | ✓ | ||
1 L (0.25 gallon) bottle | ✓ | ✓ | ✓ | ||
4 L (1 gallon) bottle | ✓ | ✓ | ✓ | ||
19 L (5 gallon) cubitainer | ✓ | ✓ | ✓ |
Solution | Description | Use with electrodes |
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810007 | ROSS electrode fill solution, 3 M KCl, 5 x 60 mL | ROSS Ultra, ROSS and Micro ROSS Electrodes 800300, 800500U, 8102BN, 8102BNUWP, 8103BN, 8103BNUWP, 8104BN, 8104BNUWP, 8115BN, 8115BNUWP, 8135BN, 8135BNUWP, 815600, 8156BNUWP, 8157BNU, 8157BNUMD, 8157UWMMD, 8163BNWP, 8165BNWP, 8172BNWP, 8175BNWP, 8220BNWP, 8302BNUMD |
900011 | Silver Chloride pH electrode fill solution, 4 M KCl with Ag/AgCl, 5 x 60 mL | Standard, Specialty, Single Junction Refillable Green, Micro and ORP Electrodes 9102BNWP, 9103BNWP, 9104BNWP, 9156BNWP, 9157BN, 9157BNMD, 9162BNWP, 9165BNWP, 9172BNWP, 9180BNMD, 9678BNWP, 9778BNWP, 9780SC, 9810BN, 9826BN, 9863BN, GS9156BNWP |
900004 | Silver Chloride pH electrode (low level) fill solution, 2 M KCl with Ag/AgCl, 5 x 60 mL | Standard, Specialty, Single Junction Refillable Green, Micro and ORP Electrodes (low ionic strength samples) 9102BNWP, 9103BNWP, 9104BNWP, 9156BNWP, 9157BN, 9157BNMD, 9162BNWP, 9165BNWP, 9172BNWP, 9180BN, 9180BNMD, 9678BNWP, 9778BNWP, 9780SC, 9810BN, 9826BN, 9863BN, GS9156BNWP |
910008-WA | Double junction pH electrode fill solution, 3 M KCl, 5 x 60 mL | Double Junction, Double Junction Refillable Green and KNIpHE Electrodes 9102DJWP, 9110DJWP, 9120APWP, GD9156BNWP |
510011 | No Cal pH electrode fill solution, 5 x 60 mL | No Cal Electrodes 5107BNMD, 5107NC |
610001 | pHuture pH electrode fill solution, 5 x 60 mL | pHuture Electrodes |
900001 | Single junction reference electrode fill solution, equitransferent solution with Ag/AgCl, 5 x 60 mL | Single Junction Reference Electrode 900100 |
900002 | Double junction reference electrode inner fill solution, equitransferent solution with Ag/AgCl, 5 x 60 mL | Double Junction Reference Electrode 900200 |
900003 | Double junction reference electrode outer fill solution, 10% KNO3, 5 x 60 mL | Double Junction Reference Electrode 900200 |
Accessory | For use with | Description |
Electrode Storage Bottles and Bulb Guards | Bulb guards can be used with glass-bodied standard or Sure-Flow pH Electrodes. Bottles can be used with any 6, 8, or 12 mm bottle. | The bulb guard fits over the electrode and will not interfere with the Sure-Flow flushing action. |
Orion Electrode Adapter Cables | Any legacy Orion pH Electrode or other brand electrode for use with an Orion Star or Versa Star Meter. | Convert an electrode with one connector to the required connector of another meter with an electrode adapter cable. |
Orion Electrode Extension Cables | Orion ATC probes, any reference electrode with 2mm pin tip connector or any electrode with a BNC connector. | Extend the length of an electrode cable by 15′ (4.57m) with the extension cable. |
Orion Storage Sleeve and Base | pH electrodes that are 120mm or less in length that have a .diameter of 12mm | The sleeve protects your electrode from breakage when not in use and will not tip. The pH bulb stays conditioned while in storage so that it is ready to use when removed from the sleeve. |
Orion Swing Arm Electrode Stand | All Orion electrodes and probes. | Weighted base, swing arm and electrode holder that accepts up to four electrodes or probes, and a stirrer probe. |
Orion Star A Series Electrode Holder for Electrode Stands | All Orion electrodes and probes | Holds up to six 15mm conductivity and DO probes. |
Orion Lab Star Series Electrode Stand | All Orion electrodes and probes | Electrode stand with meter-attachable bracket |
View all electrochemistry meter accessories ›
Using high-quality solutions to calibrate and maintain your sensors is the best way to ensure your data is both accurate and reproducible. Learn more about why high-quality solutions deliver correct measurements every time.
The accuracy and reliability of your pH and ORP measurements depends on the instrumentation you use. Learn more about how you can identify the best match based on your required features, performance, specifications, and budget.
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Take your pH and ORP measurements to the field without sacrificing accuracy and reliability. Our portable meters are rugged and waterproof, and provide the dependable performance that your demanding applications require.
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Thermo Scientific Pocket Testers are ideal for on-the-go electrochemical testing.
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Validation and qualification (IQ/OQ) services for Thermo Scientific Orion bench and portable meters are currently available through Unity Lab Services in the United States ›
Knowledge Base: Certificates of Analysis and SDS for Orion, ROSS, AQUAfast, AquaMate, and AquaSensors products.
Orion Meters Software and Upgrades
Thermo Scientific Orion benchtop and portable meters are designed to help deliver accurate, consistent results, day after day. Boost productivity by upgrading your software today.