Logo for Kent Scientific

Stamped Ear Tags

Stamped Ear Tags
Stamped Ear Tags Stamped tag and applicator

Mouse and rat ear tags are used in research and lab animals, such as mice, rats, and other small animals. The ear tags are silver in color and made of a monel, nickel-copper alloy with excellent corrosion resistance, strength and ductility.

Note: Numbering longer than 3 characters will wrap around to the other side of the tag.

Custom Orders

A minimum order of 1,000 ear tags is required for special numbering. Ear tag sequence always begins at 1, examples include 3001 to 4000, 4001 to 5000. If you require ear tag numbering that begins at "0" please specify on your order. Note that it may take additional time for processing.

Custom numbering and alpha characters incur additional fees. Please contact Customer Service at 888-572-8887 for a quotation.

Allow 8 to 12 weeks for delivery.

Your Price
Save for later


Material: Monel (nickel-copper alloy)
Dimensions (closed): Inside: 2.38 mm H x 7.14 mm L
Outside: 2.36 mm W x 3.18 mm H x 9.52 mm L
Applications: Mice, rats, and other small animals

Directions for Use

All of our animal identification ear tags are applied with a hand-held ear tag applicator. The stainless steel ear tag applicator is designed to seal the ear tags with minimal pressure, while providing a good, secure seal. The animal ear tag applicator can be used with or without the spring. The spring applies slight closing pressure to help hold the tag in the applicator prior to sealing.

Ear tags should be washed in alcohol or disinfectant to help prevent infection to the ear. Place the mouse or rat ear tag in the ear tag applicator, keeping the “hole” side with the identification number flat against the jaw of the ear tag applicator. Locate the tag on the ear, applying behind a ring of cartilage. After crimping, be sure the tag point has come through the hole and is bent over, securing the ear tag properly.

Stamped Rodent Ear Tags

Applicator Hints

Place the tag in the applicator keeping the "hole" side of the tag flat against the jaw of the applicator with the indentation. Locate the tag within the ear, applying beyond a ring of cartilage. After sealing, be sure to check that the tag point has come through the hole and bent around, sealing properly.


  • Small size for unobstructed movement and less stress
  • Self-piercing and self-locking for quick application
  • Corrosive resistant to maintain ID (identification) in extreme condition


Stamped ear tags are numbered consecutively. Three digits will fit on one side of an animal ear tag. Random sequences of a hundred consecutive ear tags are available for immediate shipment. Optionally, up to six digits will wrap around to the reverse side of the mouse or rat ear tag. Longer numbers and type changes are available for an additional charge.

Custom Orders

See above information for custom number ordering.


  • I need ear tags for cows

View All Product Reviews