𝐂𝐅𝐅𝐀-𝟏𝟎𝟎: 𝐀𝐜𝐜𝐞𝐥𝐞𝐫𝐚𝐭𝐞𝐝 𝐄𝐱𝐩𝐨𝐬𝐮𝐫𝐞 𝐭𝐨 𝐃𝐢𝐬𝐢𝐧𝐟𝐞𝐜𝐭𝐚𝐧𝐭𝐬
Purpose: To determine surface changes, including color, gloss, or surface deterioration, including cracking, peeling or hardening, as a result of exposure to disinfectants. Reference: N/A
Apparatus: Petri Dishes – 100 mm D x 15 mm H (3.94” D x 0.59” H) Disposable graduated pipettes, capable of delivering the required 2.5 milliliter test liquid.
Clorox Healthcare Hydrogen Peroxide Cleaner Disinfectant. (Wipes)
VIREX® II 256, diluted to specified concentration. (one part to 256 parts water)
Clorox Healthcare Bleach Germicidal Wipes.
Procedure:
1. Cut samples with die to a minimum size of 4 ½” square.
2. Condition the specimens for minimum one hour at 80°F.
3. Gently push sample into Petri dish, forming a bowl shape. Leave dish under the sample as support to make a slightly concave bowl.
4. Place 2.5 ml of disinfectant on the surface of the sample in bottom of “bowl”. (The wipes must be squeezed and the liquid collected for pipetting onto the specimens).
5. Place treated dish in 80°F oven for 24 hours. This will assure total evaporation within 24 hours so the next exposure can begin.
6. Repeat steps 4 and 5 for a total of 5 applications.
7. Remove samples from oven.
Sample Evaluation:
Clean the specimens and visually examine for discoloration or change in gloss, then flex by hand to check for cracks, peeling, or increase in hardness. Measure Delta E. 0.5 is acceptable deviation.
Evaluation:
Requirements to Pass:
At the end of five days, clean the sample and report:
Color Change: 0.5 Delta E. Max
Gloss: Slight Change, No Cracking, No Peeling, No Hardening.
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