June 17, 2008

sigg is bpa free


I am a big fan of the Sigg bottle and my whole family uses them daily. With the recent developments about new concerns over bisphenol A safety levels, I was curious if Sigg had tested their bottles for leaching BPA.

I've read about how canned food is leaching it, sometimes in larger quantities than the plastic bottles do. The cans which leach have a food-grade epoxy lining, which sounds very similar to how Sigg describes their lining. It would be so ironic if Siggs were leaching BPA after we have steered away from plastics. So I wrote to the company and asked to see the results of their testing.

They wrote back with concrete info and assured me that the Sigg bottles are indeed safe. Whew! So glad. They told me:

• The SIGG “internal protection lacquer” (a.k.a. - the bottle liner) meets and exceeds requirements outlined by the USA FDA regulations (175.300). The liner is micro thin and still allows for the bottle to be 100% recyclable.

• Based on multiple tests (both in-house and independent), the SIGG liner does not impart any taste or odors into the liquid. The liner is resistant to fruit juice acids, isotonic/energy drinks, alcohol and virtually any consumable beverage. Due to the finish/porosity of the liner, SIGGs outperform polycarbonate #7 (Lexan) and other plastic materials at reducing bacteria build-up and ease of cleaning.

• SIGG’s bottle liner is totally inert because it is baked on at extremely high temperatures. The liner is flexible and remains intact and fully functioning no matter how dented the outside of the bottle becomes due to rough use.

• SIGGs are safe to be placed in the dishwasher with no harm to the liner. The Swiss believe the bottles can be washed more thoroughly by hand in hot soapy water. Dark spots which materialize in the bottle are sugar deposits and can typically be cleaned by baking soda or SIGG cleaning tablets.

• In addition, SIGG’s liner protects from any migration or leaching of the liner & container into the liquid. All tests of the liquid reveal no trace (0 %) of any of the following chemicals: Perfluorooctanoic Acid (PFOA), Bysphenol A (BPA) and Bysphenol B (BPB).

“While the polycarbonate bottles we tested leached a significant amount of BPA, the SIGG bottles – both new & used – showed no detectable BPA.”- Jonathan Chun, PhD, Alliance Tech, USA 2007

They also sent the actual test results of the leaching tests, but I didn't ask for permission to post them (sorry). Now I can relax and drink up!

4 comments:

Garnet said...

They're a great bottle. Good enough we had two of ours stolen while traveling. Still need to replace those. We used regular glassware for the rest of the trip. :)

Mary Beth said...

Oh, that's good. I was worried about the liner; that's why I bought Klean Kanteens (but they are made in China).

cari c said...

So are those SIGGs that your boys are using made of plastic or the usual SIGG metal? They look plastic in that picture...

Anonymous said...

I was about to buy another SIGG at the store the other day when I noticed the label said the sport top was made of PVC. Is this true and something else to be concerned about?