Capable of marking the tail and skin not only of albino mice but also of colored mice such as C57BL/6.
The inks used for these markers are safe for animals.
Available in six colors, with a thick and thin double tip on the same marker, or three colors with a fine tip specially adapted for marking small numbers and characters.
The tail marking method with Oppen is suitable for short-term identifications.
Compared to ear punching or ear tagging, this method is less stressful for the animal and easier for the experimenter.
For identification on animal fur, Animal marker is recommended.
In addition to identifying mice and rats, Oppen can also be used for rabbits, marmosets, and other animals.
It is suitable for marking ears, tails, and skin, including during surgical procedures.
Comparison of Oppen markers:

The fine-tipped Oppen marker is specially designed for writing. It allows for clear and precise small numbers and characters without smudging, thus expanding identification possibilities.
Dual tip (thick and thin):
- 6 Colors: Black, Green, Pink, Blue, Purple and Orange
Single tip (fine):
- 3 Colors: Black, Pink and Blue
| Reference | Description |
|---|---|
| A-2404-00564 | Oppen Black (1 pc) |
| A-2403-00555 | Oppen Black (6 pcs) |
| A-2404-00565 | Oppen Green (1 pc) |
| A-2403-00556 | Oppen Green (6 pcs) |
| A-2404-00566 | Oppen Pink (1 pc) |
| A-2403-00557 | Oppen Pink (6 pcs) |
| A-2404-00567 | Oppen Light Blue (1 pc) |
| A-2403-00558 | Oppen Light Blue (6 pcs) |
| A-2404-00568 | Oppen Purple (1 pc) |
| A-2403-00559 | Oppen Purple (6 pcs) |
| A-2404-00569 | Oppen Orange (1 pc) |
| A-2403-00560 | Oppen Orange (6 pcs) |
| Reference | Description |
|---|---|
| A-2607-00754 | Oppen fine tip Black (1 pc) |
| A-2607-00754-6P | Oppen fine tip Black (6 pcs) |
| A-2607-00755 | Oppen fine tip Light Blue (1 pc) |
| A-2607-00755-6P | Oppen fine tip Light Blue (6 pcs) |
| A-2607-00756 | Oppen fine tip Pink (1 pc) |
| A-2607-00756-6P | Oppen fine tip Pink (6 pcs) |

