4.1 This test method provides an indication of the capability of the vacuum cleaner to remove embedded dirt from carpeting. This test method is based upon results of home cleaning tests so that, in most cases, a reasonable correlation exists between home and laboratory results. The amount of dirt picked up in the laboratory test may not be the same as in the home; however, it will show that, in most cases, a vacuum cleaner that performs well in the laboratory will perform well in a home. Laboratory results may differ due to variations in the homes, carpets, dirt, and other factors (see Section 6).4.2 In order to provide a uniform basis for measuring the performance described in 1.1, standardized test carpets and a standardized test dirt are employed in this procedure.1.1 This test method covers only a laboratory test for determining the relative carpet dirt removal effectiveness of household/commercial vacuum cleaners when tested under specified conditions.1.2 This test method is applicable to household/commercial types of upright, canister, and combination cleaners.1.3 The test method applies to embedded dirt removal from carpets, not the removal of surface litter and debris.NOTE 1: The F11.21 subcommittee is actively pursuing new market relevant carpets with the assistance of the carpet industry. Although plush and Frieze carpet panels are no longer available for purchase, some laboratories may still have samples for testing. In such cases, the table values remain valid.NOTE 2: Due to the influence of environmental conditions, variations in time, origin of test materials, and proficiency of the operator, most of the described test methods will give more reliable results when applied for comparative testing of a number of appliances at the same time, in the same laboratory, and by the same operator until a new interlaboratory study has been completed to provide repeatability and reproducibility values.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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4.1 The growth of fungi in and on the surface of paint films represents a major cause of discoloration or disfigurement of painted surfaces. Because of their dark pigmentation, it is frequently difficult to distinguish fungi from dirt or soil particles.4.2 Use of Pictorial Standards:  4.2.1 The pictorial references that are part of this test method are for illustration purposes and may be used for visual comparisons.4.2.2 The diagrams represent an idealized schematic of various growth levels on paint films. They are intended as a representation only, but will serve as a useful guideline to establish amount and type of growth.4.2.3 The diagrams represented in Fig. 1 are not derived from a linear scale. The scale is intended to provide for more discrimination at the earlier stages of fungal or algal growth. It is at these levels that greater discernment is necessary.4.2.4 Comparisons made on dark colored substrates will be much more difficult, and will therefore require much more care and attention. It must be noted that because it is difficult to distinguish mild fungal or algal growth on the very dark substrates, there may be a tendency to under-rate those specimens.1.1 Fungal growth, frequently referred to as mildew in the paint industry, causes defacement of paint film exposed outdoors. The visual rating of paint surface disfigurement due to fungal or algal attack is required in order to compare the performance of different coatings.1.2 This method of rating mildew evaluation is intended to be used on exterior exposed paint films. This method may be used to rate interior fungal or algal growth, but it should be noted that the growth patterns on interior surfaces are different than exterior due to the lack of weathering influences. It is primarily intended for test specimens, but can also be used for rating mildew growth on larger structures such as entire houses. If this is used for large areas, the project should be broken down into smaller sections.1.3 This method is intended for field use for the macro rating of surface disfigurement only. The visual scales are meant to be used by the unaided eye to rate algal, fungal, or dirt disfigurement on larger surface areas such as test panels, siding boards, or entire buildings. Techniques are included for the differentiation of soil and dirt.1.4 Fungi will grow on most paint films exposed outdoors that are located in conditions favorable to growth. Test procedures such as Practices D1006, D3456, and G7 are available describing natural exposure tests that can be used to expose paint films, in order to create fungal or algal growth.1.5 The pictorial references available for use with this test method provide a numerical basis for rating the degree of fungal or algal growth on paint films.1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Change in color or appearance of coated exterior surfaces due to such factors as dirt collection or retention is undesirable. If Test Method D 3274 or other test methods are used to establish that dirt collection is the primary cause of such a change, this test method can be used to quantify the degree of dirt collection or, more properly, the degree of change in visual appearance of the coated surface due to dirt collection.When used in this manner and with color change, exposure duration and environment specified, this test method can provide a performance specification with respect to dirt collection.This test is only useful as a comparative test.1.1 This test method covers an instrumental procedure for quantifying the degree of dirt collection on exposed exterior coated panels.1.2 This test method is limited to those coated exterior panels with lightness values before exposure significantly greater than those after exposure.1.3 The instrumental readings do not distinguish between mildew growth and other forms of dirt.1.4 This test method measures total dirt collection. Loose dirt may be washed and removed from specimens if only imbedded dirt collection is to be measured.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.

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4.1 This test method provides a laboratory test for determining the relative carpet dirt removal effectiveness of residential central vacuum cleaning systems when tested under standard conditions and on representative types of carpets.4.2 This laboratory test method may not give a representation of carpet embedded dirt cleaning effectiveness in the home.4.3 In order to provide a uniform basis for measuring performance as described in 1.2, standardized test carpets and standardized test dirt are employed in this procedure.4.4 The results reflect a non-loaded cleaning capability and may not be representative of cleaning capabilities under dirt loading conditions.1.1 This test method covers only a laboratory test for determining the relative carpet dirt removal effectiveness of residential central vacuum cleaning systems when tested under specified conditions.1.2 This test method is applicable to residential central vacuum cleaning systems intended for cleaning carpets.1.3 This test method applies only to embedded dirt removal from carpets, not the removal of surface litter and debris.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.NOTE 1: The F11.21 subcommittee is actively pursuing new market relevant carpets for Specification F655 with the assistance of the carpet industry. Although plush and Freize carpet panels are no longer available for purchase, some laboratories may still have samples for testing. In such cases, the table values remain valid.NOTE 2: Due to the influence of environmental conditions, variations in time, origin of test materials, and proficiency of the operator, most of the described test methods will give more reliable results when applied for comparative testing of a number of appliances at the same time, in the same laboratory, and by the same operator until a new interlaboratory study has been completed to provide repeatability and reproducibility values.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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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3.1 This test method covers a procedure to determine the maximum functional volume of the primary dirt receptacle when installed in the vacuum cleaner.3.2 This test method provides the maximum amount of test media that the primary dirt receptacle will hold and may be more than the volume obtained when filled to the manufacturer's recommended fill line.1.1 This test method covers household types of upright, canister, and combination vacuum cleaners.1.2 This test method provides a measurement in dry quarts or litres of the maximum functional volume of the primary dirt receptacle when installed in the vacuum cleaner.1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazards statements see 7.2 and 8.5.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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