Maintaining The Instrument Standards - HunterLab LabScan XE User Manual

Maintaining the Instrument Standards

It is important that the standards be treated with extreme care. When a standard is used, center it
carefully at the reflectance port. Never use a calibrated standard to back samples being measured. The
sample clamp or a white uncalibrated tile should be used as a backing.
When not using the standards, keep them in the standards case. Inspect the standards for dust and
fingerprints before standardizing the LabScan XE.
The white and green tiles and black glass can be cleaned using a soft nylon-bristle brush, warm water,
and a laboratory-grade detergent such as SPARKLEEN. Wipe the tiles dry using a clean, non-optically-
brightened, lint-free paper towel.
Note: SPARKLEEN is manufactured by Fisher Scientific Co., Pittsburgh, PA 15219, and may be
ordered from them using catalog number 4-320. Add one tablespoon of SPARKLEEN to a gallon of
water.
The fluorescent standard used with the UV control option must be cleaned as well. This Spectralon
standard may be air brushed with a jet of clean, dry air or nitrogen, NOT FREON. If air brushing is
insufficient, sand the standard under running water with 220-240 grit waterproof emery cloth until water
immediately beads and runs off the surface. Then blow the standard dry with clean air or nitrogen.
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Maintenance and Testing 5-3