When NIWA (the National Institute of Water & Atmospheric Research) conducted a major research project into stock assessment levels of snapper on the west coast of New Zealand’s North Island, they needed to tag and release many thousands wild fish. Tagged fish were likely to be caught and eaten. Both the Ministry of Fisheries and fishing industry stakeholders were concerned that someone might be hurt if glass tags were used.

For the project to proceed, ENSID developed a food-safe alternative.

Made from FDA-approved surgical plastics and manufactured using a patented plastic infusion process, our food-safe RFID tags are available in:

• 11 x 2.7 mm or 22 x 4.6 mm sizes
• ISO or non-ISO models
• read/write options
• 134.2 or 125 kHz frequencies
• coloured black for easy retrieval

Our food-safe tags can withstand temperatures of -50°C to 160°C and have withstood pressures up to 900 bar.

For more information, see:

• a video slideshow about our tags and their uses (11MB WMV);
• a test report describing field trial results (1.6MB PDF).
• Supporting technologies for our food-safe tags