Inexpensive Microwave Survey Instruments: An Evaluation
William A. Herman, Donald M. Witters, Jr. · 1979
Cheap EMF detection devices often provide unreliable readings that can miss real hazards or trigger false alarms.
Plain English Summary
Government researchers in 1979 tested cheap microwave detection instruments that consumers and repair shops were using to check microwave oven safety. They found significant reliability problems with these devices, which could either miss real hazards or trigger false alarms that cost consumers unnecessary repair visits.
Why This Matters
This 1979 Bureau of Radiological Health study reveals a critical problem that persists today: the challenge of accurately measuring EMF exposure. While this research focused on microwave ovens, the core issue applies to all EMF measurement devices flooding the consumer market. The reality is that reliable EMF detection requires sophisticated, expensive equipment and proper calibration. When inexpensive meters give false readings, people either live with dangerous exposures they can't detect or waste money on unnecessary remediation. What this means for you is that those $50 EMF meters on Amazon may not be giving you accurate information about your actual exposure levels. The science demonstrates that proper EMF assessment requires professional-grade equipment, not consumer gadgets that may provide a false sense of security or unnecessary alarm.
Finding
Based on the findings presented above, it seems clear that there are serious questions about the ability of each of these instruments to distinguish oven leakage levels which exceed the requirements of the Federal Performance Standard for Microwave Ovens (CFR 1030.10) from lower levels which do not.
In their words
“Based on the findings presented above, it seems clear that there are serious questions about the ability of each of these instruments to distinguish oven leakage levels which exceed the requirements of the Federal Performance Standard for Microwave Ovens (CFR 1030.10) from lower levels which do not.”
Figures from the Original Paper
Diagram extracted from the original research document.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{inexpensive_microwave_survey_instruments_an_evaluation_g4690,
author = {William A. Herman and Donald M. Witters and Jr.},
title = {Inexpensive Microwave Survey Instruments: An Evaluation},
year = {1979},
}