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Epredia

RICHARD-ALLAN SCIENTIFIC COMPANY · Model Periodic Acid Solution · UDI-DI 00673693089562

510(k) clearances

Adverse events

Recalls

Facilities

Description

Alcian Blue reacts to compounds containing anionic groups such as acid mucosubstances and acid mucins. At pH 2.5, both carboxylated and sulfated acid mucosubstances are stained blue. Periodic acid is used to oxidize the tissue to form aldehyde groups that are demonstrated by Schiff Reagent. Glycogen and neutral mucosubstances as well as basement membranes will be stained magenta by Schiff Reagent, followed by a tap water rinse to develop and intensify its magenta hues. An optional counterstain may be used to provide nuclear detail. Hematoxylin 7211 is recommended; however, Kernechtrot Nuclear Fast Red may be used if a red nuclear stain is desired

Recalls

Date	Firm	Reason
2006-07-25	EMD Chemicals Inc	Due to loose caps, the SO2 levels dropped significantly from release levels causing the product not to perform properly.

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Data compiled from public U.S. FDA sources (GUDID, 510(k)/PMA, MAUDE, recalls, establishment registration). Adverse-event reports are unverified and do not establish causation. Informational only — not medical, clinical, or regulatory advice.