RF Cell Culture Irradiation System with Controlled Temperature and Field Strength
Arthur W. Guy · 1977
The report describes an RF cell culture irradiation system with controlled temperature and field strength that can produce electric field strengths up to 100 V/cm from D.C. to 1000 MHz in a 5-ml sample of culture medium.
Plain English Summary
The system was designed for the National Institute for Occupational Safety and Health to determine human RF exposure thresholds in the frequency range D.C. to 100 MHz. The final design uses concentric stainless steel rings with a teflon bottom that forms a liquid-tight seal compressed by brass retainer clamps.
Why This Matters
The initial design was unsuccessful because high input impedance made it difficult to couple power to the culture medium and more power was absorbed by the coolant than the culture. The final system allows accurate dosimetry through vector voltmeter measurements processed by a programmable Hewlett-Packard 65 calculator in seconds. The system can operate at frequencies up to 1 GHz and is useful for determining whether observed effects in vitro are athermal or thermal in nature.
Exposure Details
- SAR
- 200 W/kg
- Electric Field
- 100 V/cm
Exposure Context
This study used 100 V/cm for electric fields:
- 33.3Kx above the Building Biology guideline of 0.3 V/m
This study used 200 W/kg for SAR (device absorption):
- 500x above the Building Biology guideline of 0.4 W/kg
Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.
Where This Falls on the Concern Scale
Show BibTeX
@article{rf_cell_culture_irradiation_system_with_controlled_temperature_and_field_strengt_g4420,
author = {Arthur W. Guy},
title = {RF Cell Culture Irradiation System with Controlled Temperature and Field Strength},
year = {1977},
}