Bisco E-5638EB Etch-37 BAC Phosphoric Acid Dental Etchant 30 Gm
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Etch-37 w/BAC 37% phosphoric acid etchant - 30g Bulk Bottle. Polymer-thickened antimicrobial semi-gel with Benzalkonium Chloride (BAC). Designed for etching tooth structure prior to bonding. Effective at quickly etching enamel and dentin.