The RFID Bolus Tag is a long-lasting and tamper-proof solution for animal identification and tracking. It is designed to stay safely inside the stomach of ruminant animals like cattle and buffalo. Made from biocompatible ceramic , the tag is safe to use, durable, and ensures lifetime identification without the risk of falling off or getting damaged. Ideal for farms and cooperatives, it helps record and track important data such as health, breeding, and movement for every animal.
Built for Lifetime Identification & Precision

Looking for a maintenance-free animal tracking solution?
Choose ID Tech’s RFID Bolus Tag, trusted by dairy farms, cooperatives, and animal research centers for reliable and secure cattle ear tag tracking alternatives.
The RFID Bolus Tag provides a safe, permanent way to identify animals from the inside. Each bolus contains a unique 15-digit ID that cannot be changed, making it ideal for accurate animal tracking throughout the animal’s life. It is given orally using a special applicator and stays securely in the animal’s rumen due to its balanced weight and size. The ceramic capsule with a food-grade silicone seal protects the internal electronics from moisture, heat, and acid inside the stomach, ensuring reliable performance for years. This makes it a practical and maintenance-free solution for farmers looking for secure, lifetime animal identification and efficient livestock management.
To ensure proper implantation and accurate tracking:
| Physical Parameters | |
|---|---|
| Dimensions | 20mm ± 0.3mm × 67mm ± 1mm (Cattle) |
| Weight | 72.5gm ± 1gm |
| Encasement/Material | Bio-Compatible Ceramic |
| Packaging | Premium Plastic Packing |
| RF Specifications | |
| Protocol | ISO 11784, ISO 11785 (FDX-B, HDX) |
| Operating Frequency | 134.2 KHz |
| Read Range Fixed Reader | Up to 15 cm (Reader Dependent) |
| Read Range Handheld Reader | Up to 10 cm (Reader Dependent) |
| IC Type | Em4305 | Hitags256 |
| UID Memory | 32 Bit | 32 Bit |
| User Memory | 512 Bit | 256 Bit |
| Lock Feature | Converts EEPROM To Read Only |
| Data Retention | 10 Years Non Volatile Data Retention |
| Read Write Cycle | Upto 1,00,000 |
| Environmental Specifications | |
| Operating Temperature | -5°C to +85°C |
| Storage Temperature | -5°C to +85°C |
| IP Rating | IP 68 |
| Chemical Resistance | Alcohol, ammonium chloride 25%, fuel B, HCl. 10%, salt water |
| Shock & Vibration | IEC 68.2.29 [40 g, 18 ms, 6 axis, 2000 times] | IEC 68.2.6 [10 g, 10 to 2000 Hz, 3 axis, 2.5 h] |
| Tagging Method | Implanted into Rumen Using Applicator |
| Personalisation | |
| User Laser Marking | Text, Numbers, Barcode, Etc. |
| Order Information | |
| Part No. | IDTRFT.LS.BLS.2067 |