Trovan Unique ID100 (FDXA) microchips are designed for use in zoo animals, lab animals, wildlife & research and are NOT to be used in companion dogs, cats and horses in Australia as legislation specifies the use of ISO (FDX-B) microchips for companion animals in Australia. The Trovan Unique ID100 microchips are small glass-enveloped microchips supplied in individual needles in sterilised format and are generally implanted under the skin. In many species there are recommended implant sites that we can help you with depending on the species of animal, bird, fish or reptile that you are working with. It is important to use the Trovan Unique ID100 microchips as opposed to other FDXA microchips or ISO FDX B microchips (including Trovan ID162 ISO FDXB microchips). ISO FDXB microchips are used in companion dogs and cats in Australia and are similar in appearance. However, the ISO FDXB microchips generally cannot be read efficiently or at all by many of the fixed reader/antenna systems available. So, if you elect to go down that path now or later, the use of chips other than the Trovan Unique ID100 FDXA chips may limit your flexibility in this area. There are also a number of other advantages in using the ID100 microchips including quality, reliability and uniqueness of code issues. For all of these reasons, Trovan Unique ID100 microchips are, by far, the most commonly used form of implantable RFID identification in lab research, wildlife research and zoo applications in Australia.