BPA (Bisphenol A) is an industrial chemical which has been incorporated into making certain plastics and resins. This chemical is toxic to the body as it is linked to cancer. Heating up containers made with BPA will increase the amount of BPA that gets leeched into the food. BPA, is primarily found in Polyvinyl Chloride and certain forms of Polycarbonate (PC). ONYX does NOT produce from these kinds of plastic. ONYX products are 100% BPA- free and never puts the safety of customers at risk.
Code 3 plastics are usually not intended for food handling. It may contain Bisphenol A (BPA) in the PVC and is normally used for pipes, windows and siding. ONYX does NOT produce any plastics from polyvinyl chloride (code 3). All of the ONYX products are made from food grade materials.
Code 7 is a “catch all” for other types of plastic (including Tritan, Polycarbonate, Ingeo biopolymer, Polylactic acid, Acrylic, Nylon, etc.). Some type 7 plastics may incorporate Bisphenol A monomer (for example Polycarbonate), however other plastics such as Tritan do NOT contain BPA. A majority of our plastic water bottles are made from Tritan, which is now a widely used material for plastic bottles. Tritan (recycle code 7) does not contain BPA or other bisphenols. The material has been thoroughly tested by independent third-party laboratories and is rated food-grade.
ONYX products have been tested and certified by TUV and SGS that they are free of BPA and meet the US Food and Drug Administration (FDA) standards. Plastic ingredient codes can be found on the bottom of our products. In general, plastics marked with codes 1, 2, 4 and 5 are unlikely to contain BPA or phthalates.
Avoid buying from brands you are unfamiliar with. When you go dishware shopping, try to stick to your few main brands that you are familiar with and are confident that they have high safety standards. If you see a new brand, try to look up the brand on the web and see if they have a website which attests to their safety standards in order to make sure the products are 100% BPA free.
Other References:
http://www.abc.net.au/health/talkinghealth/factbuster/stories/2013/04/23/3737325.htm
http://www.motherjones.com/environment/2014/03/tritan-certichem-eastman-bpa-free-plastic-safe