Use of pH Meter and Points to Consider 

pH is an important parameter that has been measured from the very beginning. You can play a role in taste (acid = fresh, neutral = soft, alkaline = fresh) and food preservation. In environmental sampling and monitoring, it can be indicative of a high or low pH. The treatment process in wastewater treatment is pH dependent. In biotechnology, pH must be considered for the production of immunoassay solutions. They are a tool for pH.

You want accurate pH data. Who would not want that? You deserve accurate data, but you need to calibrate frequently for accurate pH data.

Calibration frequency depends on applications, some applications require daily calibration, others may only require weekly or monthly calibration. More frequent calibration is recommended when measuring in heavily contaminated, low-ion, strongly acidic and high-temperature solutions.

Probes for your pH meter usually last 6-12 months. This is true regardless of whether the probe is used or not. According to the brand, the codes on it will determine the age of your pH probe. Accordingly, you can determine the expiration date of the probe.

Keeping your pH probe clean can help eliminate pH calibration issues. pH electrodes usually require weekly or monthly cleaning. Always check the meter and electrode guides for calibration and routine maintenance information.

Before cleaning a pH electrode, it should be noted that distilled or deionized (DI) water should not be used for electrode storage or soaking. This can cause permanent damage to the electrode. However, when cleaning, it is recommended to use DI water to rinse the electrode while transferring it to another solution. Also, it is preferable to clean the pH electrodes chemically rather than mechanically.

Because the electrodes may have a plastic or glass electrode body, the term “glass electrode” is not indicative of the material used to form the electrode body. Rather, “glass electrode” is used to describe the membrane material (ie, the glass membrane). laboratuvar cihazları

If the reference and sensing electrode are in a solution with the same pH, there should theoretically be no difference in their potentials, resulting in a 0 mV display on the pH meter. A new electrode, if carefully prepared, will typically have a value of only a few mV.

The electrode and calibration cup should be rinsed between the calibration points with the following solution, as any displaced buffer carried may cause measurement error. For example, if you have completed calibrating at pH 7 and are preparing to calibrate to pH 10, rinse with pH 10 buffer. Alternatively, the electrode can be rinsed with deionized water, then carefully dried. The calibration container must always be clean. The size of the calibration cup is typically not important as long as the electrode is immersed.