Fluorescent probes for pH sensing in living cells have emerged as indispensable tools in both fundamental biological research and clinical diagnostics. These probes employ a diverse array of ...

When Arnold Beckman, a professor of analytical chemistry at the California Institute of Technology, was asked to devise a way to measure acidity in citrus fruit, the resulting “acidometer” ...

The illustration is a summary map of the organellar pH measured with a single pH-sensitive probe, SITE-pHorin, which possesses an ultra-pH sensitivity enhanced by the quantum entanglement effect. As ...

One of the most basic tools for tinkering with electronics is a multimeter. Today, even a cheap meter has capabilities that would have been either very expensive or unobtainable back in the 1970s.

IPI tests paper-based materials and adhesives for pH levels using a modification (described in ISO 18902) of the standardized test, TAPPI T 509 Hydrogen Ion Concentration (pH) of Paper Extracts (Cold ...

The pH scale is used to measure the acidity of a fluid. The pH scale ranges from 0 to 14. A pH of 7 is neutral, whereas a pH result below 7 is acidic and above 7 is alkaline. Urine has the widest ...