: Measures electromagnetic pollution in Graham-Stetzer (GS) units.

: Plugs into outlets to identify high-pollution areas. A reading below 50 GS units is generally considered acceptable, while below 25 GS units is ideal.

To ensure the correct number of filters are purchased and properly placed, the is highly recommended.

The filters are typically available in various quantities to suit different home sizes and electrical pollution levels.

: Suitable for smaller spaces or filtering a specific room with high electronic usage. Available for ~$215 at Less EMF .

Purchasing (also known as Graham-Stetzer filters) is a strategy used to reduce "dirty electricity"—high-frequency voltage transients and harmonics—on electrical wiring. These plug-in devices are designed to filter electrical noise within the 2 kHz to 150 kHz range, which proponents claim can improve power quality and alleviate symptoms such as headaches or fatigue for those with electrical hypersensitivity. Purchasing Options and Kits

: It helps avoid "overloading" or under-filtering an area by confirming if a filter significantly reduces the reading (at least 20%) at a specific outlet. Key Considerations for Buyers Stetzerizer Filter | Stetzer Electric, Inc.

: Recommended for an average-sized home, as it typically takes 15–20 filters to effectively "clean up" a standard residential environment. Available for ~$855 at Less EMF . Critical Installation Hardware