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Care of Instrument Standards
White and Black Tiles
It is important that the standards be treated with great care. They should be kept in the standards box or
tile holder when not in use, and should be protected from physical damage and dirt when in use.
Be sure the standards are clean before using them for standardization. Use a soft nylon brush and
Sparkleen (Fisher Scientific Catalog Number 4-320) in water solution (1 tablespoon per gallon),
followed by a running hot water rinse to clean them. Wipe dry with a clean, lint-free paper towel with
no fluorescent whitening agents (FWAs) to remove water marks.
Note: Do not use the anti-static lens cleaning solution on the standards.
Spectralon Fluorescent Standards (optional)
Spectralon is an optical standard and should be handled in much the same way as other optical
standards. Although the material is quite durable, care should always be taken to prevent contaminants
such as finger oils from contacting the material's surface. Always wear clean gloves when handling the
material.
If the material should become soiled, it may be air brushed with a jet of filtered, compressed air or an air
puffer. Do not use freon. If air cleaning is insufficient, the piece should be sanded under running
deionized water with 220-240 grit waterproof emery cloth until the surface is totally hydrophobic (water
beads run off immediately). Blow dry with clean air or nitrogen or allow the material to air dry.
11/02
Maintenance
4-7
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