EXAMPLE EXCERPT · NOT A REAL TEST
Material shielding summary
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INTERACTIVE LESSON 03
How to read a shielding test report
Look beyond the headline. Explore five parts of a fictional report and ask what the evidence really supports.
FICTIONAL TRAINING EXAMPLE. The sample below is deliberately incomplete. It is not a laboratory report, certification or evidence for any real product.
Which conclusion is supported?
Keep the claim within the evidence
Match the sample, frequencies, setup and results to the claim. Request the full report when details are missing.
Read the shielding claims guide →Read the lesson summary
A fabric swatch, finished garment, phone case and installed room are different test objects. Identify exactly what was tested before applying the result to a purchase.
Check the frequencies, configuration, method and revision. A headline maximum does not describe every condition. Ask for the complete results and uncertainty, rather than extending a selected value to other frequencies or setups.
Check the laboratory, date, sample identity and full report. Missing information calls for clarification; it is not proof that the product fails. Physical shielding results alone do not establish a health benefit.
Your report-reading checklist
- Exact sample or product model
- Frequencies and field quantity
- Test method, revision and setup
- Full results, uncertainty and limitations
- Laboratory, date and traceable report
- A conclusion that matches the tested claim
Sources and scope
ASTM D4935 public scope describes a method for planar materials under specified conditions. This lesson does not reproduce the standard, teach its procedure or claim that the fictional excerpt meets it.
FTC health-product evidence guidance provides context for evaluating health claims separately from material performance.
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