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Test Method: CPSC-CH-E1003-09 

Standard Operating Procedure for Determining Lead (Pb) in Paint and Other 

Similar Surface Coatings* 

April 26, 2009 

This document provides information on the test method that is used by the U.S. Consumer 

Product Safety Commission뭩 (CPSC) testing laboratory (LSC) in the analysis of paint and 

certain painted products. The method is used to determine the total lead content of paint, or a 

painted surface, on a dry paint basis. This method supersedes all previously published standard 

operating procedures for lead in paint testing. Existing accreditations remain valid. The rules 

for accreditation for lead in paint testing for compliance to the Ban of Lead-Containing Paint and 

Certain Consumer Products Bearing Lead Containing Paint, Code of Federal Regulations, Title 

16, Part 1303 (16 C.F.R 1303) remain unchanged, and do not explicitly require the use of this 

or any earlier standard operating procedure 


This method is provided to inform interested parties of the method used by LSC for assessing the 

total lead in paint and other surface coatings. Other laboratories making such assessments are 

not required to follow this method; however, other laboratories should consider using these 

procedures to ensure they obtain results that are consistent with CPSC staff뭩 for purposes of 

compliance to 16 C.F.R. 1303. 

CPSC staff has concluded that this test method is sufficient to make appropriate determinations 

concerning lead in paint, as defined in 16 C.F.R 13031. Screening tests by x-ray fluorescence 

may sometimes be employed by CPSC staff to determine samples in need of such testing. 


1. Sample – an individual consumer product or a group of identical consumer products from 

a batch to be tested. 

* This document was prepared by CPSC staff, has not been reviewed or approved by, and may not necessarily 

reflect the views of, the Commis sion. 

1 The Consumer Product Safety Improvement Act of 2008 (CPSIA) requires the regulatory limit for lead in paint 

and other similar surface coatings to be reduced from 0.06% to 0.009% on August 14, 2009. CPSC staff has 

concluded that this method is sufficient for either limit. 


2. Component Part – an individual sub-unit within the total sample. Each separate paint 

color on a sample is a component part. 

3. Composite Testing- like parts – combining like paints from several like parts or products 

to obtain sufficient sample size for analysis when there is an insufficient quantity of paint 

on one item to perform testing. 

4. Composite Testing-different parts – combining different paints (e.g., multiple colors) 

from one or more samples to reduce the number of digestions and instrumental lead 

analyses performed. 

5. Instrument Detection Limit (IDL) – 3 times the standard deviation of 10 replicate 

measurements of reagent blank. The IDL for Pb on the Inductively Coupled Plasma 

Optical Emission Spectrometer (ICP-OES) used by CPSC staff is 0.01 킽/ml. 

6. Method Detection Limit (MDL) – reagent blank fortified with 2-3 times the IDL. Seven 

replicate measurements are made. Calculate the MDL as follows: MDL = t x S, t = 3.14 

(99% confidence level for 7 replicates), S = standard deviation. The MDL determined for 

Pb is 0.01 킽/ml. 

7. Laboratory Reagent Blank (LRB) – an aliquot of the digestion reagents that is treated 

exactly as a sample including exposure to glassware, digestion media, apparatus, and 

conditions used for a particular Pb test, but with no added sample. LRB data are used to 

assess contamination from the laboratory environment. 

8. Calibration Blank – deionized water acidified with nitric acid (3 ml concentrated nitric 


no. title name date
3 New Catalog & Price List !! 2010 7/2/2009
2 Guide to the Consumer Product Safety Improvement Act 4/28/2009
1 New Update News for CPSIA 4/28/2009

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