Measuring pH


Testers Portable Meters Benchtop Meters pH electrodes Solutions accessories
Testers Portable Meters Benchtop Meters Electrodes & Probes Solutions Accessories
pH test kits strips  Portable Photometers  Benchtop Photometers Reagents accessories
Chemical Test Kits Portable Photometers Benchtop Photometers Reagents Accessories


Hanna Instruments, an industry pioneer in pH meters, offers a wide variety of instrumentation for measuring pH.  From portable, handheld pH testers to single and multiparameter pH meters and research grade bench tops, Hanna has an accurate, affordable solution for nearly any pH application.  Choose a category above to learn more about our pH testing products.

When storing a pH electrode it is always important to keep both the electrode and junction hydrated.  The glass sensing bulb has to be hydrated since a hydrated layer is formed as part of the electrode characteristic.  The junction is kept wet to prevent the salt from precipitating and keep the diffusion of the electrode from the reference cell into the sample.  If storage solution (HI 70300) is not available than pH 4 is recommended.  The reason that pH 4 is reccomended over the other buffers is that growth including bacterial, mold, and fungal are inhibited at lower pH's. 

What is pH?

pH refers to the concentration hydrogen ions.  In chemistry, it is a measurement of the acidity or basicity of an aqueous solution. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. Pure water has a pH very close to 7.

Application Bulletins:

Monitoring pH & Temperature in Superabsorbent Polymer Manufacturing