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Significance and Use
5.1 Subject to the limitations listed in 1.3, this practice can be used as a research tool to optimize spray equipment and paint formulations, as well as to study the relative effect on transfer efficiency of changing operating variables, spray application equipment, type of coatings, etc.
1.1 This practice covers the evaluation and comparison of the transfer efficiency of spray-applied coatings under general laboratory conditions. Transfer efficiency is the ratio of paint solids deposited to the total paint solids used during the application process, expressed as a percent. This practice can be used to study the effect on transfer efficiency of changing operating variables and paint formulations. Key variables that need to be controlled are listed in 8.13.
1.2 The reproducibility of this practice is highly dependent on the degree of control of the parameters listed in Section 8 of the practice.
1.3 Limitations—This laboratory practice indicates only the direction of the effect of operating variables and liquid paint formulations on transfer efficiency under conditions of the laboratory test: the magnitude of the effect can be determined only with specific plant experience. In fact, the nature of the critical parameters that affect transfer efficiency makes clear that it is not possible to extrapolate laboratory results.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 7, Note 8 and Note 9.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1200 Test Method for Viscosity by Ford Viscosity Cup
D2369 Test Method for Volatile Content of Coatings
D3925 Practice for Sampling Liquid Paints and Related Pigmented Coatings
D5009 Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions
Other StandardsNFPA33 Spray Application Using Flammable and Combustible Materials Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http://www.nfpa.org. NFPA86 Standard for Ovens and Furnaces
ICS Number Code 29.020 (Electrical engineering in general)
UNSPSC Code 46181533(Protective coats)