The Biomark HDX12 Pre-load Individual tag is loaded in a single use needle. The tags are secured inside the needle, preventing the tags from falling out before being implanted. They eliminate the need to disinfect between implants, making it a very efficient and safe tagging system. All Biomark PIT tags are ISO 11784 and 11785 compliant and ICAR approved. Used trays, lids, and needles can be recycled. Please check with your local recycling services.