AATCC LP6-2024 Laboratory Procedure for Preparation of Appearance Evaluation Area 1. Foreword in the gas excites mercury vapor, which : nominal length 96 in, (designated produces visible light. F96, see 9.3), and 1.1 Much of the information contained 5.2 LED lamp, n.—a light source that : nominal diameter 1/2 in. (12/8 in., in this standard was previously included uses light-emitting diodes (LEDs) to pro- designated T12). invariousAATCCtestmethods.In2023, duce visible light. 7.2.3 If LED lamps are used (see 9.4), a laboratory study was conducted com- 5.3 incandescent lamp, n.—an elec- paring light-emitting diodes (LED) to select those with: tric light source that uses a heated wire • cool white light, traditional fluorescent and incandescent filament to produce visible light. The fil- : diffuse light (you should not be able bulbsforuseintheevaluationarea.To more fully describe and maintain lighting ament is enclosed in a glass bulb that is to see the individual LED spots of light filled with vacuum or inertgas toprotect when looking at the illuminated lamp), options and other critical details of the thefilamentfrom oxidation. evaluation area, the information was :nominal length 48 in., 5.4 luminaire, n.—a complete light- moved to this stand-aloneprocedure. :nominal diameter 1 in.(8/8 in., des- which can be combined with multiple test ing unit consisting of a light source ignated T8), methods including AATCC TM88B, 88C, with a means of distribution (reflector : nominal illuminance 2100 lm, 124, 128, and 143. and/or refractor), lamp positioning : correlated color temperature (CCT) (socket), lamp protection (housing), 4000K±300K 2. Purpose and Scope and a provision for power connection. ·colorrendering index(CRI)≥80, and 2.1 This procedure provides guidance : light intensity 1000 ± 500 Ix (see 8.8). 6. Safety Precautions on preparing an appearance evaluation 7.2.4 Luminaire, white enamel reflec- area, including selecting and verifying 6.1 The safety precautions specified tor (without baffle or glass), appropriate lamps. in the procedure are ancillary to the for selected lamps (see 9.4) and for 2.2 Theprocedure is used in combina- standard and are not intended to be all- mounting as shown in Fig.1. tion with test methods specifying the vi- inclusive. 7.3 Directional lighting (if specified by sual appearance evaluation of textile ma- 6.2 It is the user's responsibility to ref- test method or evaluation procedure) terials and products. erence applicable safety data sheets, use 7.3.1 Incandescent or LED lamp with: safe and proper techniques, and wear ap- . white light, 3. Principle propriate personal protective equipment :nominal power10oW in handling materials in this standard. : beam angle ≤45° (full width, see 9.5), 3.1 Specifications for the viewing 6.3UsersMUST consultmanufactur- : light intensity 1000-1500 1x, board, lighting, and room arrangement ers for specific details such as safety data :CCT2800-6500K,and for a visual evaluation area are provided. sheets, equipment operating instructions, : CRI of ≥80. 3.2 Guidance on selecting and verify- and other recommendations. Consult and 7.3.2 Luminaire, appropriate for the se- ing lamp properties is also provided. follow all applicable health and safety lected lamp, with an aluminum reflector regulations (e.g., OSHA standards and to focus light and prevent stray light, ad- 4. Referenced Documents rules). justable to height and position as shown in Fig. 2 NOTE: Use current versions of all 7. Apparatus and Materials (see 9.2) 7.3.3 Light shield, adjustable to height publications unless otherwise specified. and position as shown in Fig.2. The role 4.1 AATCC TM88B Test Method for 7.1 Viewing board. of a light shield is to prevent the light Seam Smoothness in Fabrics after Home 7.1.1 A flat surface 1829 mm (72 in.) emitting from the flood light from dis- Laundering (see 9.1). in height and at least 1219 mm (48 in.) tracting the observer. The shield should 4.2AATCC TM88C Test Method fo