Shel wrote: > I filled the offending (offensive?) bottle with boiling water and let it > sit for a while. When the bottle cooled enough I poured out the water - > UGH! brown, brown, BROWN! So, it seems that there was something > going on inside that particular bottle.
Glad to hear you got to the root of this ugly problem! > However, I've not treated that bottle any differently than other > bottles, and have not had problems with any other bottles. Maybe it's > just luck. However, the bottle in question is also different from the > other bottles. All the others are #2 plastic, this one is #7, made by > Kalt. I wonder if the different plastic may have anything to do with it. Hmmm, could be. Might also be that whoever molds these bottles for Kalt doesn't have as clean a facility as the molding company that makes the #2 bottles from your other supplier. If these numbers are inside of little triangles, they're recycling codes. The ones with a #2 stamp on the bottom are polyethylene -- just like laundry detergent bottles. According to a web site I just looked up, #7 is "other resins". That could mean just about anything. Yikes!! > I wonder what frequent filling with boiling water might do to the durability > of the bottles. Doesn't seem to be a problem with plastic baby formula bottles, but I'm not sure if these are #1 (polyethylene terephthalate, same as soda pop bottles and synthetic carpet fibers) or #2. I'd guess that thermoplastic resins like these should be able to handle boiling water, since they're subjected to much higher temperatures when recycled and remolded. > Thanks so much for your suggestions. They seem to have worked. You're very welcome -- glad to help out! Bill Peifer Rochester, NY - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
