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3.1 This test method was developed to meet the following criteria:3.1.1 It provides positive recognition of sensory irritants of widely varying potencies.3.1.2 It is sufficiently simple to permit the testing of large numbers of materials.3.1.3 This test method is capable of generating concentration-response curves for purposes of compound comparison.3.1.4 This test method has good reproducibility.3.2 This test method can be used for a variety of divergent purposes, including the assessment of comparative irritancy of compounds or formulations and setting interim exposure levels for the workplace (1, 2).23.3 It has been shown that for a wide variety of chemicals and mixtures, a perfect rank order correlation exists between the decreases in respiratory rate in mice and subjective reports of sensory irritation in man (1, 3, 4, 5).3.4 A quantitative estimate of the sensory irritancy of a wide variety of materials can be obtained from concentration-response curves developed using this method (1, 3, 4, 6, 7, 8, 9).3.5 Although this test method is intended to measure sensory irritation of the nasal mucosa, the cornea is innervated by the same nerve. This animal model will, therefore, allow an estimate of the irritant potential of cosmetic ingredients or other household products to the eye, assuming that they can be aerosolized (10).3.6 This test method is recommended for setting interim guidelines for exposure of humans to chemicals in the workplace, to assess acute sensory irritation resulting from inadvertent spills of household products, and to assess the comparative irritancy of formulations or materials intended for a variety of uses (see Appendix X2).FIG. 1 Typical Tracing of Normal Mouse Respiration (Top), and of a“ Moderate” Sensory Irritant Response (Bottom)NOTE 1: Taken from Ref. (3).FIG. 2 Typical Tracing of Normal Mouse Respiration (Top), a Moderate Pulmonary Irritant Response (Center), and an Extreme Pulmonary Irritant Response (Bottom)NOTE 1: Taken from Ref. (8).3.7 This test method will detect irritating effects at concentrations far below those at which pathological changes are observed (9).NOTE 1: A good overview of the toxicological evaluation of irritant compounds is given in Ref (8).1.1 This laboratory test method provides a rapid means of determining sensory irritant potential of airborne chemicals or mixtures. It may also be used to estimate threshold limit values (TLV) for man. However, it cannot be used to evaluate the relative obnoxiousness of odors.1.2 This test method is intended as a supplement to, not a replacement for, chronic inhalation studies used to establish allowable human tolerance levels.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. Specific hazard information is given in Section 6.1.4 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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5.1 This method allows for the evaluation of seal quality by passing an ultrasound signal through the sealed area of a package or item. Poorly sealed areas will not transmit as much ultrasonic energy as properly sealed areas.5.2 This method relies on quantitative analysis of ultrasound signal strength, providing a non-subjective approach to assessing package seal quality and detecting defects.5.3 This technique has been used for inspecting a variety of materials including flexible pouch seals, rigid tray seals and other packaging components such as affixed valves. The precision and bias for any specific package and seal configuration needs to be individually determined and validated.5.4 The C-Scan approach is useful for laboratory applications or off-line seal inspection. The L-Scan approach can be used for on-line, real time inspection of seal quality. The sensitivity of either approach to detect a given defect size and level of severity needs to be individually determined.5.5 Sound waves propagate at different speeds through different materials generally moving faster through more dense materials. The acoustic impedance (expressed as g/cm2·μs) is the product of density (g/cm3) and velocity (cm/μs). Of particular importance is the extreme difference between the impedance of air and that of any solid material. Any gap or poorly bonded area can be readily detected.Material Velocity(cm/μsec) Density(g/cm3) AcousticImpedance(g/cm2-μsec)Air (20°C, 1 bar) 0.0344 0.00119 0.000041Water (20°C) 0.148 1.0 0.148Polyethylene 0.267 1.1 0.294Aluminum 0.632 2.7 1.7101.1 This standard method describes the technology and testing procedures that can be used to detect seal defects in the size range of 1 mm and characterize seal quality in a variety of packaging styles using airborne ultrasound technology.1.2 This test method does not purport to be the only method for measurement of seal quality.1.3 Heat seals and other package components can be tested in flexible, semi-rigid and rigid packages. Only the precision and bias for flexible package seals were evaluated in a recent ILS included in the method. The precision and bias for any specific package needs to be individually determined.1.4 On-line, real time inspection of seals can be considered particularly in the L-Scan mode.1.5 This method provides a non-destructive, quantitative, non-subjective approach to flexible package seal inspection.1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.7 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.1.8 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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5.1 The main part of this standard uses procedures originally developed for laboratory measurements of the sound transmission loss of partitions. These procedures assume that the rooms in which the measurements are performed have a sound field that reasonably approximates a diffuse field. Sound pressure levels in such rooms are reasonably uniform throughout the room and average levels vary inversely with the logarithm of the room sound absorption. Not all rooms will satisfy these conditions. Experience and controlled studies (1)6 have shown that the test method is applicable to smaller spaces normally used for work or living, such as rooms in multi-family dwellings, hotel guest rooms, meeting rooms, and offices with volumes less than 150 m3. The measures appropriate for such spaces are NR, NNR, and ATL. The corresponding single number ratings are NIC, NNIC and ASTC. The ATL and ASTC are measurable between larger spaces that meet a limitation on absorption in the spaces to provide uniform sound distribution.5.2 Annex A1 was developed for use in spaces that are very large (volume of 150 m3 or greater). Sound pressure levels during testing vary markedly across large rooms so that the degree of isolation varies strongly with distance from the common (separating) partition. This procedure evaluates the isolation observed near the partition. The appropriate measure is NR, and the appropriate single number rating is NIC.5.3 Several metrics are available for specific uses. Some evaluate the overall sound isolation between spaces including the effect of absorption in the receiving space and some evaluate the performance or apparent performance of the partition being evaluated. The results obtained are applicable only to the specific location tested.5.3.1 Noise Reduction (NR) and Noise Isolation Class (NIC)—Describe the sound isolation found between two spaces. Noise reduction data are based on the space- and time averaged sound pressure levels meeting the requirements of 11.3 or A1.3 as required depending on the sound absorption, volume, and shape requirements of 9.2. Noise reduction values are influenced by the absorption in the receiving space as well as the apparent performance of the partition. The noise reduction values in unfurnished spaces are typically less than in furnished spaces, and noise reduction values between the spaces depend on the test direction used and the sound absorption in the spaces. However, these effects are lessened when the method of Annex A1 is used.5.3.2 Normalized Noise Reduction (NNR) and Normalized Noise Isolation Class (NNIC)—Describe the sound isolation between two residential or office spaces meeting the requirements of 9.3.1 adjusted to standardized room conditions typical of such spaces when normally furnished.5.3.3 Apparent Transmission Loss (ATL) and Apparent Sound Transmission Class (ASTC)—Describe the apparent sound insulation of a partition separating two spaces as influenced by flanking in the supporting structure. All sound transmission, including any flanking transmission, is ascribed to the partition. The apparent transmission loss of the partition will be less than the actual sound transmission loss (Path D in Fig. 1) if flanking (Path F in Fig. 1) is significant (2,3). These results are in theory the same in each direction but differences with direction have been observed in practice. If it is necessary for diagnostic purposes to suppress flanking when doing measurements, the results must be clearly labeled as “flanking suppressed.”5.4 The primary use of this test method is to evaluate the sound isolation and apparent sound insulation performance in buildings based on tests of unmodified structures. If the measurement methods are used for diagnostic or investigative purposes to measure the performance of modified structures in buildings, results must be clearly labeled to indicate such.NOTE 3: Versions of this standard prior to 2017 included TL and STC metrics with prefixes designated as “Field (F).” The “Field” version of the metrics was intended to exclude the presence of flanking sound transmission altogether; whereas, the “Apparent” version presumes an (unknown) degree of flanking. In addition, the “Field” version of the metrics required more stringent limits on room volume and room absorption. These earlier versions also included guidance on suppression of flanking, useful for diagnostic purposes.1.1 The sound isolation between two spaces in a building is influenced most strongly by a combination of the direct transmission through the nominally separating building element (as normally measured in a laboratory) and any transmission along a number of indirect paths, referred to as flanking paths. Fig. 1 illustrates the direct paths (D) and some possible structural flanking paths (F). Additional non-structural flanking paths include transmission through common air ducts between rooms, or doors to the corridor from adjacent rooms. Sound isolation is also influenced by the size of the separating partition between spaces and absorption in the receiving space, and in the case of small spaces by modal behavior of the space and close proximity to surfaces.FIG. 1 Direct (D) and Some Indirect or Flanking Paths (F and Dotted) in a Building1.2 The main part of this test method defines procedures and metrics to assess the sound isolation between two rooms or portions thereof in a building separated by a common partition or the apparent sound insulation of the separating partition, including both direct and flanking transmission paths in all cases. Appropriate measures and their single number ratings are the noise reduction (NR) and noise isolation class (NIC) which indicate the isolation with the receiving room furnished as it is during the test, the normalized noise reduction (NNR) and normalized noise isolation class (NNIC) which indicate the isolation expected if the receiving room was a normally furnished living or office space that is at least 25 m3 (especially useful when the test must be done with the receiving room unfurnished), and the apparent transmission loss (ATL) and apparent sound transmission class (ASTC) which indicate the apparent sound insulating properties of a separating partition including both the direct transmission and flanking transmission through the support structure. The measurement of ATL is limited to spaces of at least 25 m3 where modal effects create fewer problems. With the exception of the ATL and ASTC under specified conditions, these procedures in the main part of the test method are only applicable when both room volumes are less than 150 m3.NOTE 1: The word “partition” in this test method includes all types of walls, floors, or any other boundaries separating two spaces including those that are permanent, operable, or movable.1.3 The NR and NIC between two locations are always measureable and reportable though conditions present will influence how measurements are performed. With one exception (see 13.5.1), it is required that the NIC always be reported. Restrictions such as minimum room volume or dimensions or maximum room absorption are imposed for all other measures and ratings in this standard. Thus, conditions sometimes exist that will not allow NNR (NNIC) or ATL (ASTC) to be reported. Where a partition between rooms is composed of parts that are constructed differently, or contains an element such as a door, the ATL and ASTC of the individual elements or portions of the partition are not measurable without modifications to the rooms. To evaluate the field performance of a door less than 6 m2 in area, use Test Method E2964. The various metrics are inherently different quantities, so that NIC cannot be used instead of NNIC or ASTC to evaluate compliance with a specification when the specification is written in terms of one of those metrics that cannot be reported with the conditions present.1.4 Annex A1 provides methods to measure the sound isolation between portions of two rooms in a building separated by a common partition including both direct and flanking paths when at least one of the rooms has a volume of 150 m3 or more. The results are the noise reduction (NR) and noise isolation class (NIC).1.5 This test method is intended to evaluate the actual acoustical performance between rooms in buildings. Thus, it forbids temporary modifications that influence performance. The measurement methods are useful in diagnostic situations where modifications are made. In such cases reports of results are required to clearly indicate that such modifications were made.1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.7 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.1.8 This standard may involve hazardous materials, operations, and equipment. 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.1.9 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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5.1 The best uses of this guide are to measure the OINR and the AOITL(θ) or OITL(θ) at specific angles of incidence. By measuring the AOITL(θ) or OITL(θ) at several loudspeaker sound incidence angles, by energy-averaging the receiving room sound levels before computing results, an approximation of the diffuse field results measured with Test Methods E90 and E336 may be obtained.5.2 The traffic noise method is to be used only for OINR measurements and is most suitable for situations where the OINR of a specimen at a specific location is exposed to an existing traffic noise source.5.3 The OINR, AOITL(θ), and OITL(θ) produced by the methods described will not correspond to the transmission loss and noise reduction measured by Test Methods E90 and E336 because of the different incident sound fields that exist in the outdoors (1)4. All of these results are a function of the angle of incidence of the sound for two reasons.5.3.1 The transmission loss is strongly influenced by the coincidence effect where the frequency and projected wavelength of sound incident at angle, θ, coincides with the wavelength of a bending wave of the same frequency in the panel (2, 3, 4, 5). This frequency and the angle of least transmission loss (greatest transparency) both depend on specimen panel stiffness, damping and area mass. In diffuse-field testing as in the laboratory, the effect is a weakness at the diffuse field average coincidence frequency that is dependent on material and thickness, often seen around the frequency of 2500 Hz for drywall and glass specimens. Thick wood panels, such as doors, and masonry wall exhibit lower coincident frequencies while thinner sheet steel exhibits higher coincidence frequencies. For free field sound coming from one direction only, the coincidence frequency varies with incidence angle and will differ from the diffuse-field value (5). Near or at grazing (θ close to 90°) it will be much lower in frequency than the diffuse field (E90 and E336) value, and will increase with reducing θ to be considerably above the diffuse-field frequency when θ is 30° or less.5.3.2 The OINR is influenced by the angle of incidence of free field sound coming from a specific angle as compared to a diffuse field. This is because the intensity of free field sound incident across the specimen surface S is reduced by cos(θ) when the sound is not incident normal to the surface. Additionally, when the sound of level L arrives as a free-field from one direction only, and that is normal to the surface, the resulting sound intensity in this direction is 4 times that due to diffuse-field sound of the same level, L. These factors are reflected by the cos(θ) and 6 dB terms in Eq 6.5.3.3 The methods in this guide should not be used as a substitute for laboratory testing in accordance with Test Method E90.5.4 Of the three methods cited for measuring the outdoor sound field from a loudspeaker, the calibrated loudspeaker and flush methods are most repeatable. The near method is used only when neither the calibrated speaker nor the flush method are feasible.5.5 Flanking transmission or unusual field conditions could render the determination of OITL(θ) difficult or meaningless. Where the auxiliary tests described in Annex A1 cannot be satisfied, only the OINR and the AOITL(θ) are valid.5.6 When a room has multiple surfaces exposed to outdoor sound, testing with just one surface exposed to test sound will result in a greater OINR than when all surfaces are exposed to test sound. The difference is negligible when the OITC of the unexposed surface is at least 10 greater than the OITC of the exposed surface.1.1 This guide may be used to determine the outdoor-indoor noise reduction (OINR), which is the difference in sound pressure level between the free-field level outdoors in the absence of the structure and the resulting sound pressure level in a room. Either a loudspeaker or existing traffic noise or aircraft noise can be used as the source. The outdoor sound field geometry must be described and calculations must account for the way the outdoor level is measured. These results are used with Classification E1332 to calculate the single number rating outdoor-indoor noise isolation class, OINIC. Both OINR and OINIC can vary with outdoor sound incidence angle.1.2 Under controlled circumstances where a single façade is exposed to the outdoor sound, or a façade element such as a door or window has much lower transmission loss than the rest of the façade, an outdoor-indoor transmission loss, OITL(θ), or apparent outdoor-indoor transmission loss, AOITL(θ), may be measured using a loudspeaker source. These results are a function of the angle of incidence of the sound field. By measuring with sound incident at many angles, an approximation to the diffuse field transmission loss as measured between two rooms can be obtained. The results may be used to predict interior sound levels in installations similar to that tested when exposed to an outdoor sound field similar to that used during the measurement. The single number ratings of apparent outdoor-indoor transmission class, AOITC(θ), using AOITL(θ) and field outdoor-indoor transmission class, FOITC(θ), using OITL(θ) may be calculated using Classification E1332. These ratings also may be calculated with the data obtained from receiving room sound pressure measurements performed at several incidence angles as discussed in 8.6.1.3 To cope with the variety of outdoor incident sound field geometries that are encountered in the field, six testing techniques are presented. These techniques and their general applicability are summarized in Table 1 and Figs. 1-6. The room, façade, or façade element declared to be under test is referred to as the specimen.FIG. 1 Geometry—Calibrated Source MethodFIG. 2 Geometry—Nearby Average MethodFIG. 3 Geometry—Flush MethodFIG. 4 Geometry—Equivalent Distance MethodFIG. 5 Geometry—2 m (79 in.) Position MethodFIG. 6 Geometry and Formulas—Line Source Flush Method1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.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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2.1 The contributions that an effective remote sensing system can make are:2.1.1 Provide a strategic picture of the overall spill,2.1.2 Assist in detection of slicks when they are not visible by persons operating at, or near, the water's surface or at night,2.1.3 Provide location of slicks containing the most oil,2.1.4 Provide input for the operational deployment of equipment,2.1.5 Extend the hours of clean-up operations to include darkness and poor visibility,2.1.6 Identify oceanographic and geographic features toward which the oil may migrate,2.1.7 Locate unreported oil-on-water,2.1.8 Collect evidence linking oil-on-water to its source,2.1.9 Help reduce the time and effort for long range planning,2.1.10 A log, or time history, of the spill can be compiled from successive data runs, and2.1.11 A source of initial input for predictive models and for “truthing” or updating them over time.1.1 This guide provides information and criteria for selection of remote sensing systems for the detection and monitoring of oil on water.1.2 This guide applies to the remote sensing of oil-on-water involving a variety of sensing devices used alone or in combination. The sensors may be mounted on vessels, in helicopters, fixed-wing aircraft, unmanned aerial vehicles (UAVs), drones, or aerostats. Excluded are situations where the aircraft are used solely as a telemetry or visual observation platform and exo-atmosphere or satellite systems.1.3 The context of sensor use is addressed to the extent it has a bearing on their selection and utility for certain missions or objectives.1.4 This guide is generally applicable for all types of crude oils and most petroleum products, under a variety of marine or fresh water situations.1.5 Many sensors exhibit limitations with respect to discriminating the target substances under certain states of weathering, lighting, wind and sea, or in certain settings.1.6 This guide gives information for evaluating the capability of a remote surveillance technology to locate, determine the areal extent, as well as measure or approximate characteristics of oil spilled upon water.1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.8 Remote sensing of oil-on-water involves a number of safety issues associated with the modification of aircraft and their operation, particularly at low altitudes. Also, in some instances, hazardous materials or conditions (for example, certain gases, high voltages, etc.) can be involved. 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.1.9 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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2.1 This guide is intended to encourage thorough and consistent documentation of airborne particle penetration testing and its results.2.2 Uniform information and performance data increase the likelihood of selecting proper particle protective clothing by direct comparison of one material with another.2.3 A standard format for test information and data also encourages computer storage of test results for easy retrieval, comparison, and correlations.1.1 This guide provides a format for documenting information and performance data for an airborne particle penetration test.1.2 Documented data and information are grouped into five categories that define important aspects of each test:1.2.1 Description of material tested,1.2.2 Challenge particles,1.2.3 Test method,1.2.4 Test results, and1.2.5 Source of the data.1.3 Use of this guide is facilitated by adherence to procedures outlined in a standard test method.1.4 The values stated in SI units are to be regarded as standard. No other units of measurements are included in this standard.1.5 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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