
Mettler Toledo™ Mettler Toledo™ Micro pH Electrode: LE422
Designed for measuring in small or narrow neck vessels or test tubes

METTLER TOLEDO™ InLab™ Routine pH Electrodes
A combination pH electrode with an integrated temperature sensor and chemically resistant HA glass body. It is designed for general lab applications and ideal for use at high pH values (IP67 rated).

Temperature (Metric) Range | 0°C to 100°C |
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pH Range | 0 to 14 |
Membrane | HA Glass |
Material | Glass |
Junction | Ceramic |
Temperature (Metric) Operating | 0°C to 100°C |
Oakton™ General-Purpose pH Probe, Refillable, Double junction, Glass, 3 ft Cable, BNC
Replacement Electrodes
Oakton™ Electrodes and Probes for pH 1100 and pH 2100 Meters, pH/ATC Combination Electrode, Double Junction
Replacement Electrodes
Oakton™ pH Electrode, Single-Junction, Gel
Combine durability with reliability using the Single-Junction Gel filled pH Electrode.
METTLER TOLEDO™ InLab™ Expert pH Electrodes
A combination pH electrode with PEEK plastic shaft for chemical and mechanical durability, and a fixed cable. Designed for use in a variety of applications.
Diameter (English) | 0.47 in. |
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Length (Metric) | 120 mm |
pH Range | 0 to 14 |
Diameter (Metric) | 12 mm |
Membrane | U Glass |
Filling Solution Type | Xerolyt Polymer |
Material | PEEK |
Temperature (Metric) Operating | 0°C to 100°C |
Internal Reference | ARGENTHAL |
METTLER TOLEDO™ Micro pH Electrodes
pH electrodes designed for small sample volumes or for measuring in small containers.
Response Time | <20 sec. |
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Mettler Toledo™ Economy Series pH and pH/ATC Combination Electrodes
Offer outstanding price/performance ratio. Mettler Toledo Economy Series pH and pH/ATC Combination Electrodes are cost-effective alternative for less-demanding requirements.
Temperature (Metric) Range | 0°C to 100°C |
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Temperature (English) Operating | 0°F to 176°F |
For Use With (Equipment) | pH meter |
Length (English) Cable | 47 in. |
Temperature (Metric) Operating | 0°C to 80°C |
Connector Types | BNC |
METTLER TOLEDO™ InLab™ Science pH Electrodes
A pH electrode featuring a special glass body which is resistant to corrosive or organic samples, and is ideal for high temperatures and biological media. The high electrolyte outflow prevents contaminants from entering and clogging the junction, which would interfere with the reading.
Diameter (English) | 0.47 in. |
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Temperature (Metric) Range | 0°C to 100°C |
Temperature (English) Operating | 32°F to 212°F |
pH Range | 0 to 12 |
Diameter (Metric) | 12 mm |
Membrane | A41 Glass |
Filling Solution Type | 3mol/L KCl |
Material | Glass |
Junction | Moveable Glass Sleeve |
Temperature (Metric) Operating | 0°C to 100°C |
Internal Reference | ARGENTHAL with Ag+ trap |
METTLER TOLEDO™ InLab™ Max Pro-ISM pH Electrode
An all-purpose pH electrode featuring an immovable glass sleeve to help prevent pollutants from entering and clogging the junction.
METTLER TOLEDO™ InLab™ 413/IP67 pH Electrode
A durable, plastic body pH electrode ideal for a wide range of applications that is able to withstand wet and demanding environments (IP67 rated).
METTLER TOLEDO™ InLab™ Viscous pH Electrodes
A glass pH electrode with an integrated temperature sensor featuring the SteadyForce™ reference system, which is pressurized to prevent the junction from clogging.
Temperature (Metric) Range | 0°C to 100°C |
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Length (Metric) | 40 mm |
Temperature (English) Operating | 32°F to 266°F |
pH Range | 0 to 14 |
Length (English) | 1.57 in. |
Membrane | HA Glass |
Material | Glass |
Junction | Ceramic |
Storage Requirements | 3 mol/L KCl |
For Use With (Application) | Highly viscous, highly glutinous samples |
Temperature (Metric) Operating | 0°C to 130°C |
Internal Reference | SteadyForce |
METTLER TOLEDO™ InLab™ Pure pH Electrodes
A glass pH electrode designed for ion-weak-samples such as ultrapure water and deionized water.
Temperature (Metric) Range | 0°C to 80°C |
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pH Range | 1 to 11 |
Membrane | LoT Glass |
Material | Glass |
Junction | Immovable Glass Sleeve |
Diameter (Metric) Body | 12 mm |
For Use With (Application) | Measuring samples at low temperatures or with low ion concentrations |
Internal Reference | ARGENTHAL with Ag+ trap |
METTLER TOLEDO™ InLab™ Easy pH Electrodes
A durable, polysulfone pH electrode with an integral bulb protector and gel electrolyte to avoid the inconvenience of refilling in field. Temperature sensors sold separately.
Diameter (English) | 0.47 in. |
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Temperature (Metric) Range | 0°C to 80°C |
Length (Metric) | 120 mm |
Temperature (English) Operating | 32°F to 176°F |
pH Range | 0 to 14 |
Response Time | <20 sec. |
Length (English) | 4.72 in. |
Material | Polysulfone |
Storage Requirements | 3mol/L KCl |
Probe | NTC 30 kilohm |
For Use With (Application) | Low maintenance, field measurement and educational use |
Type | Combination Electrode |
Diameter (Metric) | 12 mm |
Membrane | U Glass |
Filling Solution Type | Gel |
Junction | Ceramic |
Temperature (Metric) Operating | 0°C to 80°C |
Internal Reference | Ag/AgCl |
METTLER TOLEDO™ InLab™ Solids pH Electrodes
A low maintenance glass pH electrode with an integrated temperature probe featuring a clog-free, open junction that eliminates the risk of protein fouling. Its spear shaped tip is designed for piercing solid and semi-solid food samples (IP67 rated).
pH Range | 1 to 11 |
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Membrane | LoT Glass |
Material | Glass |
Junction | Open |
Temperature (Metric) Operating | 0°C to 80°C |
Internal Reference | ARGENTHAL |