Measuring acid rain residues on leaves and plants using the Lazar Micro combination pH electrode. Acid rain due to atmospheric contamination resulting from various kinds of industrial process plants has become an important area of environmental study in recent years. An ideal way to study acid rain residues is to actually measure the pH of individual rain droplets as they are deposited on various kinds of leaves of plants and trees and even on individual blades of grass. The problem with this kind of analysis has been the availability of a small but rugged pH electrode which can be used in the field with a portable pH meter. The electrode tip needs to be small enough to measure individual drops of rain. The Lazar micro combination pH electrode is ideally suited for these field acid rain measurements. Not only will the probe measure the pH of one drop of liquid but it is also extremely rugged having a flexible Teflon stem. It features a solid state pH sensor with a low output resistance making it very stable in both field and lab situations. It plugs directly into any laboratory or portable pH meter and can be standardized with common pH standards. The Lazar micro combination pH probe has also found applications in the fields of biotechnology, biomedical research, micro chemical analysis, and geology.

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