In today’s world, we’re at odds with bacteria and viruses that can cause harm to both humans and animals. The gamma sterilization process uses Cobalt 60 radiation to kill microorganisms on a variety of different products. Processing with gamma irradiation yields quick turnaround time, easily penetrating packaging and product, and is ideal for many types of materials. The radioisotope cobalt 60 is the energy source for use in gamma irradiation sterilization with the irradiation process taking place in a specially designed cell. A key characteristic of gamma irradiation is high penetration capability. This enables moderately dense or sealed products to be processed with relative ease and facilitates the treatment of the palletized products.
The unit of absorbed dose is kiloGray, expressed as kGy. The absorbed dose is determined by product density, pack size, dose rate, exposure time and to some degree by plant design. The typical exposure level used for gamma sterilization kGy is 25-45kGy. At 45kGy most high-frequency (HF) RFID tags are rendered useless and no data can be retrieved. Using a different structure for the RFID chip and circuit, a company can sterilize with the same RFID packaging. With the HF version, you need to let the chip regenerate over a period of several weeks if at all making this an expensive process as a new tag is generally required.
The treatment of medical devices by gamma processing has been one of the principal methods of sterilization, since the introduction of single-use, sterile, disposable medical devices in the 1960s. This simple, proven process is safe, reliable, and highly effective at treating single-use medical devices. With the ability to penetrate products while sealed in their final packaging, gamma irradiation supports the manufacturing and distribution process by facilitating final packaged product as well as raw materials, whilst still ensuring full sterility of the product.
The gamma process can effectively sterilize a wide variety of products composed of different materials, with varying densities, configurations and orientations. Some examples of products processed include: animal husbandry, archives, combination drug/device products, cosmetics and toiletries, food (meat and vegetables), horticultural supplies, medical devices, packaging, and pharmaceuticals. When sterilized with gamma rays the bacteria like e-coli are killed off; however, the actual nutrients of food products aren’t harmed, along with the laundry in hospitals.
Gamma Processing Cycle
The product arrives on a truck and is unloaded at the processing facility. It’s then received by lot and product code that’s entered into the sterilization operations management system, which provides for run generation, scheduling, processing, certification, and release of the product for shipment. The product is loaded into the processing container per established configurations, dosimeters are placed, and the product is exposed to the radiation field.
Dosimeters are analyzed after gamma irradiation of the product is complete, to confirm that the required dose has been delivered. All documentation and processing history records are reviewed, and if they are acceptable and customer specifications are met, the product is released and shipped for use or further distribution.
Backed by 40 Years of Expertise
We contribute our 40 years of manufacturing expertise spanning multiple diverse markets, and we look forward to discussing how we can deliver world-class products for OEMs across the globe. Our team is currently developing a gamma radiation tag that can absorb as many as 50 sterilizations. We already designed a UHF tag that can withstand high exposure levels. Unlike standard gamma sterilization methods, this type of UHF tag can operate after multiple exposures where standard HF tags often stop working with just one exposure.
Our flagship Chennai location opened in 2006 and lies within a Special Economic Zone (SEZ) for electronics manufacturing, offering economic incentives for imports and exports. This primary facility is within 90 minutes of the Chennai seaport and 20 minutes to the international airport, with additional road and rail connectivity linking to the rest of India and beyond, as well as infrastructure advantages with faster import and export clearances. We also have labor force availability, both technical and manual, to scale to client demand.
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