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Third Party Documentation of the Performance of LeadCheck Swabs

"With the LeadCheck tests, cutting into the paint to expose all layers will make it possible to determine
if any layer has an amount of lead greater than that allowed in the HUD requirements."

1. NIST Study, May 2000. Spot Test Kits for Detecting Lead in Household Paint: A Laboratory Evaluation.
(NISTIR 6398). For this study, HUD funded NIST (the National Institute of Standards and Technology) to
“determine the reliability of spot test kits for detecting the presence of lead in household paint when tests were
conducted by certified lead inspectors or risk assessors.” The full NIST study can be downloaded from either or by simply typing “NISTIR 6398” in the search window on the home page of either

2. FDA Laboratory Information Bulletin. Identification of Lead Solder on a Metal Can Seam (No. 4041, July,
1996, Volume 12, Number 7.) In 1995 the U.S. Food and Drug Administration (FDA) amended its food additive
regulations to prohibit the use of lead solder in the manufacture of cans used for packaging foods [(1995) 60 (June
27), 33106-33109; 21 CFR 189.240)]. This FDA Laboratory Bulletin reports the development of a protocol for
detecting lead alloy solder on a metal food can using a chemical spot kit.

3. MRI-Quantech Study, 1995. (A Field Test of Lead-based Paint Testing Technologies. Summary and
Technical Report – EPA 747-R-95-002a&b). The data section of this huge study includes “Operating Characteristic
Curves” for LeadCheck Swabs on wood and brick, for example, that prove LeadCheck’s reliability. In both of these
performance curves, the probability of obtaining a positive result at the action level (1 mg/cm2) is nearly one, that is,
close to ideal behavior as defined by EPA in 1993 (Identification of Performance Parameters for Test Kit
Measurement of Lead in Paint (EPA600R-93/129)). Clearly, these MRI-QuanTech “operating characteristic curves”
demonstrate that LeadCheck Swabs perform reliably and accurately to detect lead paint hazards. Yet in spite of
the apparent good performance by LeadCheck Swabs and others, this data was overlooked when the EPA claimed
that Chemical Spot Test Kits are not reliable for testing lead-based paint, a conclusion that was not supported by
the data!

4. Lead Test Kits, OSHA, September 1994. This study identified LeadCheck Swabs as “capable of identifying
lead at the levels given in the Lead Exposure Reduction Act (October 29, 1992) and the Department of Housing and
Urban Development (HUD) Interim Guidelines (September 1990, revised May 1991)…… “With the LeadCheck
tests, cutting into the paint to expose all layers will make it possible to determine if any layer has an amount of lead
greater than that allowed in the HUD requirements.”

5. Evaluation of Lead Test Kits, Consumer Product Safety Commission (CPSC), September 1994.
Released to manufacturers, but not to the public, this limited study identified LeadCheck Swabs as one of the top
performing chemical spot test kits.

6. A Comparative Test and Evaluation of Lead-based Paint Test Kits. (Masters Thesis by Lynn Hill, Air Force
Institute of Technology, 1993.) LeadCheck Swabs was the only kit tested that gave a performance curve for lead
chromate paint. The inflection point was around 0.3 – 0.4% lead. A positive result was obtained nearly 100% of the
time on paint that was 0.5% lead and greater.

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