Air Ion Tester, 1 PCS Mini Car Air Ion Tester Meter Counter for Negative Ion Tester Meter Air Ion Counter Generator

Descriptions: This instrument is a qualitative product, rather than quantitative products, because of the accuracy, only suitable for testing values of negative ion air purifiers and negative ion generator, and there are certain floating customers, if you mind, choose others please, thanks. Features: This air ion tester is designed for test high level concentration of negative or positive air i...