Date Vial Opened__ Date Vial Expired__ Labels. Labels are Yellow with Black text. Packaged in blister packs for easy use in label dispensers. Regulatory agencies require organizations to relabel most multi-dose vials with a revised expiration date of 28 days once the vial is opened or punctured. 1,000 per package, includes 2-500 per roll. Dimensions: 1-5/8"W x 3/8"H