How to correctly measure the ph?

The manufacture of laboratory materials is regulated and all products have to follow certain quality standards that guarantee the safety of users and a high reliability in the results they produce, so that the margins of error in experiments and tests are as good as possible. possible reductions.

As already mentioned, the materials that equip each laboratory depend on the needs of this and to choose the appropriate range of products, you must take into account the types of processes that will be carried out in it, here it is considered equipment, consumables and chemical products.

• The equipment is all the instruments used to make measurements, tools and containers that are necessary to do the research, experimentation, synthesis or analysis carried out in the laboratory.

• Consumables are those items that after a use or a couple of uses have to be discarded and include protection elements, clothing, water, compressed air and special cleaning products, among others.

• Chemical products include all substances, substrates and reagents used in investigations.

Here is an example of the laboratory materials involved in a specific process of great importance in a wide variety of industrial sectors and in the scientific field: the measurement of pH. In addition, we give some recommendations of measuring equipment that can be used to obtain highly accurate results in the measurement of this parameter, highlighting the importance of choosing correctly the materials with which a laboratory will be equipped.

The measurement of pH (hydrogen potential) is one of the most important parameters that are made for quality control and, according to specialists in the field, is the second most important after temperature. The determination of pH has a wide field of application: research, industry, teaching, among others. In laboratories where it is relevant to know the hydrogen potential, you will always find a pH measurement equipment as a primary instrument.

For the correct measurement of this parameter, it is necessary to select the optimal laboratory equipment, so it is very important to take into account the following aspects:

• Measurement equipment.

• Type and amount of sample to be analyzed.

• Electrode selection.

• Reagents needed for equipment calibration (buffer solution).

Initially, it is very important to know that if reliable, reproducible, precise and accurate measurements are required, first of all, adequate material and laboratory equipment is required for pH measurements, such as pH meters.

As a second point, if you have a good sample, you will obtain representative, accurate, accurate and reliable measurements; a sample taken incorrectly will produce measurements that are not representative, accurate, or reliable.

Later, to select the best electrode according to the type of sample, it is necessary to know the characteristics of them; there are glass body, epoxy body, refillable, non-refillable (low maintenance), micro-electrodes, bulb, flat tip, flow, among others.

According to these characteristics, the selection of the electrode must be functional for the type of sample that will be analyzed:

• For measurements where high precision is required, an electrode provides a rapid response and is suitable for research level applications.

• For samples such as culture media, TRIS solutions or those that include proteins in their formulation, the ideal measuring device is one that includes a ROSS type electrode, since said electrode has a platinum reference and its filling solution does not include silver. .

• For gels, creams, jams, with a high solids content, the recommended measurement equipment is one that includes a flat tip electrode.

• For paints and difficult samples, the ideal option is an electrode where the flow of the filling solution ensures that solids do not accumulate in the joint, preventing it from clogging.

• For samples with low solid content, transparent or clear liquids, low maintenance electrodes are a recommended option; They are also ideal for field measurements.

At Kalstein we offer you an excellent range of pH meters ranging from economical options to the most advanced equipment, recognized for their reliability, precision and ease of use. That is why we invite you to take a look at our pH meters available at HERE