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Significance and Use
5.1 This technique is applicable to dry paint films and varnishes in a variety of forms including the intact dry paint film surface, a notched or other angular cut surface that exposes a cross section of all paint layers, a paint chip, and ground paint film.
5.2 The response of the spot test method varies depending on the extractability of lead from a coating matrix, which may differ depending on the test kit used, the coating type tested, and the type of lead pigment (3).
5.3 In some situations, metals and other chemical species interfere with the spot tests causing false negative or false positive results (see Section 8).
5.4 A spot test result may be used as a negative screen for the presence of lead in paints and varnishes provided the response of the test kit is sensitive to detecting lead reliably at a given predetermined level, for example, a federal or state regulated abatement action level (4).
5.5 This practice may be used in conjunction with quantitative analytical methods for lead such as portable X-ray fluorescence, anodic stripping voltammetry, or fixed-site laboratory analysis of paint chip samples.
1.3 This practice provides a list of the advantages and limitations of chemical spot test kits based on sulfide and rhodizonate to allow the user to choose the appropriate spot test for a given circumstance.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E1605 Terminology Relating to Lead in Buildings
ICS Number Code 87.040 (Paints and varnishes)
UNSPSC Code 11101714(Lead)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM E1753-13, Standard Practice for Use of Qualitative Chemical Spot Test Kits for Detection of Lead in Dry Paint Films, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top