The IMI-500 is a miniature glass-encapsulated ‘read-only’ transponder. Scanned by an appropriate BMDS reader device, the IMI-500 transmits its 10-digit alphanumeric code, making animal identification quick, easy, and fail-safe. The IMI-500 is identical to the classic IMI-1000, except in size. Approximately 8 millimeters in length by 1.4 millimeters in diameter, the transponder features a new smaller size for specific applications. Compatible with BMDS reader systems that read the IMI1000, IMI-500 features an amazing read distance of 3 inches. Designed for harmless implantation, BMDS transponders are the most convenient, humane, reliable, and cost-effective method for automated animal identification. You can even retrieve data decades after a study ends if you remove the transponder with a tissue sample and place it into long-term storage, in cold or liquid preservative.

Injected with a syringe-like action, IMI-500 transponders are preloaded in a disposable needle assembly. The ergonomic design of this one-piece tool fully integrates the handle, stainless steel needle, and drive pin. Packaged in boxes of 100, needle assemblies (one transponder each) are processed through an ethylene oxide cycle for sterilization. No assembly is required. Pick it up, remove the needle cap, implant the transponder, and dispose of— all in one clean operation.

About Parylene Coating

Parylene coating will encourage tissue encapsulation to prevent transponder migration. The coating forms a surface that allows for tissue fiber adhesion within the animal subcutaneous layer thereby bonding around the IMI-500 transponder holding it in place. Parylene coatings are used in many animal applications as well as for human medical use. Examples are pacemakers, forceps, catheters, stents, needles, implantable devices, and many more have a parylene coating. The coatings have been proven to prevent rejection of the item and speed up the bonding process with the tissues. Parylene is fully bio-compatible. Parylene has been FDA-approved (with USP XXII Class VI biocompatibility rating) and is safe for use within the human body. Parylene has also passed the ISO10993-1/FDA biocompatibility evaluation tests for cytotoxicity, system toxicity, hemocompatibility, sensitization, and intracutaneous reactivity.

Reader Compatibillity

DAS-8001 with RSP-8004

DAS-8010 with RSP-8004

DAS-8020 with RSP-8004

DAS-8006 IUS

DAS-8008 BSC



Read Distance: 3 inches (76.2 millimeters)
Size: 1.4 millimeters in diameter & 8 millimeters long

Biocompatibility: The IMI-500 transponder is encased in glass suitable for all laboratory species. SCHOTT – Glass number 8625, soda lime-silicate glass for encapsulation, excellent tissue compatibility.

Needle: 15 gauge stainless steel, OD 0.071 inches (1.8 millimeters)

Memory: 10 alphanumeric characters (non-volatile data) Data is store on board the transponder even when not powered by BMDS Smart Probe.

Anti-Migration: The IMI-500 is coated with a micro thin coating of Parylene C.

DAS-8001 with RSP-8004

DAS-8010 with RSP-8004

DAS-8020 with RSP-8004

DAS-8006 IUS

DAS-8008 BSC


Contact BMDS

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(800) 526-BMDS (2637)

(302) 628-4100

1 Silas Road Seaford, DE 19973 USA