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Product Labeling A self-adhesive product label, with information content similar to Figure 3, is located on the inside of the roll core and on the outside over-wrap of each roll. The label indicates the product roll's width and length in both metric and English units. Figure 3: Finished Product Roll Label Information • SN is a product setup code specific to the thickness, roll width and length, and other packaging features (e.g., core leader, etc.). • BN is a 2-part code, with the first part identifying the dispersion batch number, and the second part indicating the master roll number (wide-stock roll before slitting). • SEQ is a sequential roll number (starting at 1, 2, 3, etc.) indicating the total number of finished rolls slit from the wide-stock master roll. The SEQ roll number is indicated only on the labels attached to the membrane and the roll core's ID. The manufactured date is the wide-stock roll's slit date (mm/yyyy), and is printed on the label attached to the outside of the roll's shipping box. Recommended Roll Storage Conditions Unopened roll packages of Nafion® PFSA membrane should be stored in the original shipping box, out of direct sunlight, and in a climate-controlled environment, maintained at 10 to 30°C, and 30 to 70% relative humidity. Before opening the package, pre-condition the membrane roll to the processing area temperature for 24 hours. Once opened and exposed to the environment, the membrane will equilibrate to the ambient relative humidity, and change in dimensions accordingly. Membrane order dimensions are specified and measured at 23°C and 50% relative humidity. Handling Practices Ventilation should be provided for safe handling and processing of Nafion® PFSA membrane. The amount of local exhaust necessary for processing Nafion® PFSA membrane at elevated temperatures will depend on the combined factors of membrane quantity, temperature, and exposure time. Scrap Disposal Preferred disposal options are (1) recycling and (2) landfill. Incinerate only if incinerator is capable of scrubbing out hydrogen fluoride and other acidic combustion products. Treatment, storage, transportation, and disposal must be in accordance with applicable federal, state/provincial and local regulations. Static Discharges The composite structure and individual layers can pick up a strong charge of static electricity because of the good dielectric properties of the membrane, backing film, and coversheet. Unless this charge is dissipated as it forms, by using ionizing radiation devices or special conducting metal tinsel, it can build to thousands of volts and discharge to people or metal equipment. In dust- or solvent-laden air, a flash fire or an explosion could follow. Extreme caution is needed to prevent static accumulation when using flammable solvents while coating membrane surfaces. Solvent-coating equipment should incorporate the means for detecting and extinguishing fire. Product: NR-212 Width: 30.50 cm Width: 12 in BN: X0103-1003 SN: D12345678 Length: 100 m Length: 328 ft SEQ: 1PDF Image | DuPont Nafion PFSA NR-211 and NR-212 membranes
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