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Omaha, NE – Streck, Inc., introduces CD?Chex™ Select, the first and only commercially?available flow
cytometry control with the selected group of CD markers used for immunophenotyping. The product is
an assayed positive procedural control for reagent staining, erythrocyte lysis, sample preparation and
instrument performance. CD?Chex Select complements the full line of Streck CD?Chex flow cytometry
controls.

Sample 1 provides % positive values for CD markers including CD26, CD41, CD57, CD64, FMC7, TCR ?/?,
TCR ?/?. Sample 2 provides % positive values for epitopes CD58 and CD61, in addition to intracellular
markers CD79a and MPO.  

CD?Chex Select can be handled like a patient sample. The product eliminates the need for laboratories
to hold and validate patient samples to use as a control for the selected markers. The established means
and ranges provide pathologists with confidence in their instrument results.

CD?Chex Select features 30?day open?vial stability and 90?day closed?vial stability. Plastic 3.0ml cap?
pierceable vials are compatible with automated sample preparation instruments, including BD
Biosciences and Beckman Coulter® systems.

For Research Use Only. Not for use in diagnostic procedures.

About Streck, Inc.
Streck is an industry leader in the development and manufacturing of products for clinical and research laboratories. The company’s pursuit of innovative solutions has produced an extensive list of patented products. Streck’s core technology is cell stabilization; product lines support the fields of hematology, immunology and molecular diagnostics. For more information, visit www.streck.com.

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Standing Order Schedule

Schedule I: 13 shipments (a shipment every 28 days)
Schedule II: 7 shipments (a shipment every 56 days)
Schedule III: 5 shipments (a shipment every 84 days)
Schedule VI: 3 shipments (a shipment every 168 days)

Use the drop-down menu to select your product. If you don’t find your product listed, call Customer Service at 800-228-6090.

Note: Standing orders are shipped during the week of the release date.

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