Etch-37™ with BAC - Phosphoric Acid37% Phosphoric Acid Etchant with Benzalkonium Chloride Etch 37 is a 37% semi gel phosphoric acid etchant available with Benzalkonium Chloride (BAC) and designed for etching tooth structure prior to bonding. Bisco etchants are the only dental etchants with BAC! Curion is the official importer and Canadian source for authentic BISCO products. This product is backed by the manufacturer's warranty.
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