pH Meter Care and Common Mistakes

 pH Meter Care and Common Mistakes

PH meters are great tools for various tasks, they can make your world totally different if used properly. Unfortunately, PH meters are pretty demanding compared to vast thermometers. It would help if you gave attention and genuine care to the PH meter for proper functioning. Here is a guide on dos and don’ts with your PH meter to ensure its functions efficiently for an extended period.

Non-Replaceable Vs. Replaceable Electrode pH Meters

Before we dig into common mistakes and remedies, it’s crucial to understand the differences between non-replaceable and replaceable electrode meters and lifespan of PH probe. Although the names from both groups are self-explanatory, the type of electrode meter depends on how you plan to use it.

High Accuracy PH Meter is the best example of replaceable electrode meters; they are great, especially if you intend to use them for long-term PH testing. If you have been brewing for some time and want to keep at it, consider getting a replaceable electrode meter. On the contrary, if you are working on a short-term project that doesn’t exceed one year, opt for a non-replaceable PH meter.

PH meters tend to wear out no matter how carefully you use them. Just like old-fashioned candescent light bulbs, they ‘burn out’ over time. If you purchase a non-replaceable meter, you will have to buy a new meter in a year. For replaceable electrode meters, you will need replacement electrodes for your PH meter to keep functioning.

Lifespan Of PH Meter Electrode

Are you wondering why there is no electrode that doesn’t need replacing? The fact is that such technology doesn’t exist. Currently, the system faces various physical constraints that hinder permanent or long-lasting electrodes. Typically, the PH probe has a lifespan of about 12 months; however, it can go up to 18 months with less frequent use. However, there are things you can do to avoid destroying your PH electrodes.

Common PH Meter Mistakes and How to Avoid Them

Here are the most common mistakes observed in using PH meters and various things you can do to benefit to the maximum from your meter.

Use Of Expired Electrode

The fact is that electrodes have a limited lifespan of one year. If you have used your meter beyond 12 months, and you notice that your readings are not as you might have intended them to be, then your electrode might have expired. Thus, you need to purchase a new electrode; if you use a non-replaceable electrode meter, you will have to buy a new meter.

Dry Storage

Always store your ORP probe in clean containers filled with ORP storage solution. pH meter electrodes operate on a complicated system of chemical-electric interactions. The most crucial part of the system of interactions is a gel layer comprised of hydrated glass. If the hydrated layer dehydrates, rekindling the electrodes is almost impossible.

Every meter consists of a small cap covering the electrode filled with a storage solution. The solution ensures the electrode stays hydrated and assists in extending the life of the electrode during storage.

Most people rarely remember to refill the small cap with a storage solution before storing it after use; some even store it without the smaller cap. As a result, the electrode becomes dehydrated, causing the need for a rehydration process.

You can avoid dehydration by ensuring you fill the small-cap with a storage solution. Also, tighten the cap entirely after every use. If your electrode dry out, soak in storage solution overnight to resuscitate it; the electrode will work again. However, regular dehydration is unsuitable for the electrode and will shorten its lifespan.

Failure To Remove Both Caps

Never start using your electrode without removing the small-cap. Every PH meter has two caps, the small-cap assists in hydrating and protecting the electrodes. The larger caps save things from being banged around. For the PH meter to operate, then both caps must be removed. This is a common mistake since individuals remove the larger cap only and start wondering why the PH meter isn’t functioning.


A pH meter is a great instrument that can assist you in elevating your cheesemaking, brewing, and gardening to a higher level. Although they have their limitations, how you handle them matters a lot. However, if you follow the best practices like ensuring your electrode is hydrated, and checking the expiry, you will have the most extended lifespan from your meter.

Ferina Jenny