This pack of samples is a great way to help you decide which fabric to buy, and it’s simple. Just purchase (for a nominal amount) a “see-through pack of fours” EMF fabric sample set and an EMF meter.
Then hold the various (labelled) EMF shielding fabric pieces between your EMF monitor and the high-frequency EMF radiation source. And once you achieve your required reduction in EMF readings on your monitor with a specific sample, you know what you need! Your EMF shielding material is chosen, and you know it works for your unique EMF protection project.