pH
WHAT IS IT?
About pH
pH, commonly used for water measurements, is a measure of acidity and alkalinity, or the caustic and base present in a given solution. It is generally expressed with a numeric scale ranging from 0-14. The value 7 represents neutrality. The numbers on the scale increase with increasing alkalinity, while the numbers on the scale decrease with increasing acidity.
Each unit of change represents a tenfold change in acidity or alkalinity. The pH value is also equal to the negative logarithm of the hydrogen-ion concentration or hydrogen-ion activity. pH values for some common solutions are listed in the table to the right.
Preparing chemical solutions?
Visit our pH calculator first.
How Are pH Measurements Used?
pH measurements are widely used to control processes, ensure product quality and safety.
Custom pH Sensor Design and Manufacturing
In addition to our standard products, Sensorex designs and manufactures pH sensors for over 250 OEM partners. Whether you are looking to private label sensors and instrumentation or incorporate pH sensors as part of the design for your water treatment product, our team of engineers and application specialists can help you meet your goals. We provide custom branding on our standard products and can design custom pH sensors to meet various design specifications.
Popular ProductsSensorex pH Best Sellers
SG354/SG355 Glass-Body Flat Surface pH and ORP Electrodes
SG354/SG355 sensors feature a special high molarity reference design for stability, reliability and maximum service life in demanding pool and…
Complete Modular Submersion/Inline* pH 4-20mA Sensors
Sensorex 8000 series 4-20mA Sensors can be configured in countless variations to meet your exact needs. Click here to order…
GT/GG/GC-series Glass Body High Temperature Process pH Electrodes
Maximum chemical compatibility with inert glass bodies double-junction reference and PTFE junction (GT), gel / open pore junction (GG), or…
S8075CD – pH Sensor Cartridge for S8000 Series pH Kits with 3/4 NPT Thread, Quick Change
Our S8075 series of pH deliver the most reliable online pH monitoring in a unique, modular package that minimizes total…
Complete Modular Inline pH Smart Sensors
Sensorex 8000 series Smart Sensors can be configured in countless variations to meet our exact needs. Click here to order…
Pool Plus pH and ORP Electrodes
Pool Plus sensors feature a special high molarity reference design for stability, reliability and maximum service life in demanding pool…
Double-junction, Plastic Body Flat pH and ORP Electrodes with DIN 13.5 Cap
Our S354CD electrodes have a rugged flat measurement surface, which breaks less easily when it comes in contact with hard…
Sensorex Smart Sensor User Interface Software
Sensorex Smart Sensor User Interface Software is the perfect partner for your Sensorex Smart Probe or Smart Probe modular system.…
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In addition to pH sensors we have a full range of water quality sensors.
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