Measuring the pH of Isotonic Buffer Saline

In hospitals, intravenous (IV) solutions, such as saline or prescription drugs are commonly administered to patients for various therapies. IVs are used to deliver medications, replace fluids, balance electrolytes, and many other treatments. Since the solutions are introduced directly into the blood stream, the more similar in ionic strength the solutions are to the blood,…

Using the Backpack Lab™ Marine Science Test Kit in Education

Oceans are some of the most important natural resources in Australia providing commercial, environmental, and intrinsic values. Oceans provide 10% of human protein consumption in the form of fish and shellfish, are one of the world’s largest carbon sinks which helps mitigate increased atmospheric CO2 levels, and provide educational and recreational values. However, as human population…

Teaching pH in a University Laboratory

The concept of pH is taught to students at an early age.  Starting in primary school, substances are classified as acids, bases, or neutral; continuing through secondary school and university, pH and related concepts are taught more in depth. pH is a critical parameter in a multitude of industries, including food and beverage, pharmaceutical, wine,…

Top 10 Mistakes in pH Measurement

Are you making errors when measuring pH? Here are the top 10 mistakes that our technical staff see most often. Proper technique in pH measurement is a matter that is a bit hazy among some of our users. Questions like “how often should I calibrate?,” and “how often should I replace my electrode?” are commonplace…

Acidity in Wines

Acids give wines their characteristic crisp, slightly tart taste.  Acids occur naturally during the growing of grapes and as a part of the fermentation process. Natural acids have the freshest, purest acid tastes. Among grapes they are tartaric, malic and citric. Tartaric acid is the principal acid in grapes and is the component that promotes…

Ageing Of Electrodes

Glass Electrodes A glass Electrode is never in complete chemical equilibrium with the surrounding solution. Aqueous solutions slowly but continuously attack the glass membranes, while forming a gel layer. The ageing of a glass electrode depends on the ageing of the gel layer, which becomes thicker with time. Also, as the gel layer thickens, its…