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Mapping 250K/500K SNP assay

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156 GeneChip ® <strong>Mapping</strong> <strong>500K</strong> Assay Manual<br />

Fluidics Station Bleach Protocol<br />

Affymetrix recommends a weekly cleaning protocol for the fluidics<br />

station. This protocol uses commonly purchased sodium hypochlorite<br />

bleach.<br />

This protocol is designed to eliminate any residual SAPE-antibody<br />

complex that may be present in the fluidics station tubing and needles.<br />

The protocol runs a bleach solution through the system followed by a<br />

rinse cycle with deionized (DI) water. This protocol takes<br />

approximately one hour and forty minutes to complete. Affymetrix<br />

recommends running this protocol weekly, regardless of the frequency<br />

of use. The current version of the protocol can be found at:<br />

www.affymetrix.com/support/technical/fluidics_scripts.affx.<br />

THE BLEACH CYCLE<br />

To avoid carryover, or cross contamination, from the bleach protocol,<br />

Affymetrix recommends the use of dedicated bottles for bleach and DI<br />

water. Additional bottles can be obtained from Affymetrix.<br />

Table 6.1<br />

Affymetrix Recommended Bottles<br />

Part Number Description<br />

400118 Media Bottle, SQ, 500 mL<br />

400119 Media Bottle, SQ, 1000 mL<br />

1. Disengage the washblock for each module by pressing down on the<br />

cartridge lever. Remove any probe array cartridge (Figure 6.1).

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