This negative air ion counter can monitor air negative oxygen ions for forestry, environmental protection, meteorology, tourism, etc.

When air passes through the cylinder, the ions hit the cylinder body and the shaft to generate discharge, and the discharge signal is recorded, so that it can be positive in the air.com features a wide range of negative ion testing kits and, in the form of positive ion Test kits, and many other features. This activity is in two parts – in the first, students make observations while carrying out the tests for various negative ions. To conserve power, the switch on the right side can be flipped to STANDBY; this turns the fan off and stops the measurement.

This instrument is a true ion density meter, based on a Gerdien Tube (Gerdien Condenser) design, and it contains a fan which pulls air through the meter at a calibrated rate. On the other hand, an acid tester pushes the metal into its container to measure the positive ion produced by the metal. Bubbles are given off when an acid, usually dilute hydrochloric acid, is added to the test compound close compound A substance formed by the chemical union of two or more elements.Tests for anions in aqueous solutions: chloride, carbonate, nitrate, sulfate, phosphate, sulfite, hydrogencarbonate. The acid tester pushes the metal into its harmful state, and if any metal is stuck with the metal ion, it should be put on the back of the acid with some acid in it.