Does anyone have the pot turned full of black patches inside after boiling water?
1434441
I have a similar pot that discolors occasionally. I wipe the inside of the pot with white vinegar, full strength, and then wash normally and the staining disappears.
1434442
No, I have used mine for about 15 batches of beer. It is still in perfect shape.
1434443
I have used this pot numerous times on an electric flattop stove. I do not have any "black patches inside after boiling water". However, I have noticed a few small dark circles on the bottom of the pot - which appear to occur when there is a heavy stream of bubbles rising from the bottom of the pot during a full rolling boil. However, these spots are minimal and have not had any adverse effect on the use of the pot.
1434444
No. My husband has used his for beer (not yet 15 batches, but a few) and it is holding up fine.
1099249
I wouldn't know for certain - sounds like it could be oxidation. You could ask for a different pot. I use mine every week, but it had no marks brand new. It has a few pencil-point sized black dots now but it has had burned food when I did not watch it closely and had the heat too high or was cooking something too long by multi-tasking. The dots don't worry me, but if your pan came to you in that condition, I'd ask for a new one. Contact amazon. They can tell you how to send it back and get a new one. They have return labels you can print out. Whenever I have called them with a problem, they promptly call me and I have resolved every one of the few problems I have had. I hope I was helpful. I wouldn't know for certain - sounds like it could be oxidation. You could ask for a different pot. I use mine every week, but it had no marks brand new. It has a few pencil-point sized black dots now but it has had burned food when I did not watch it closely and had the heat too high or was cooking something too long by multi-tasking. The dots don't worry me, but if your pan came to you in that condition, I'd ask for a new one. Contact amazon. They can tell you how to send it back and get a new one. They have return labels you can print out. Whenever I have called them with a problem, they... » Read More I wouldn't know for certain - sounds like it could be oxidation. You could ask for a different pot. I use mine every week, but it had no marks brand new. It has a few pencil-point sized black dots now but it has had burned food when I did not watch it closely and had the heat too high or was cooking something too long by multi-tasking. The dots don't worry me, but if your pan came to you in that condition, I'd ask for a new one. Contact amazon. They can tell you how to send it back and get a new one. They have return labels you can print out. Whenever I have called them with a problem, they promptly call me and I have resolved every one of the few problems I have had. I hope I was helpful. « Show Less
994801
Aluminum pots acquire an oxide layer after boiling anything in them. This is a good thing. Do not try to scrub it off. I would recommend using a soft sponge or a green scrubby sponge and some elbow grease.
2045816
Vaguely written question, but I haven't had any weird water rings appear after boiling water for extended periods. This pot is truly stainless, and I've had absolutely no problems cleaning it, even with dried, crusted crap all over it. I think I'll be ordering some more Calphalon stuff soon. Very solid, I'm very happy with it.
2134542
I would err on the side of caution and say don't use it anymore. If you've burned the chrome coating off the copper, there's a good chance you have compromised the seams of the kettle or maybe also the soldered connections that hold the "heating element" to the bottom. It was an unfortunate mistake that can happen to anyone. Trying to do too much at once, while making tea! Sorry this happened to you and your VERY EXPENSIVE kettle, but I wouldn't risk using the kettle again. Do you have money? Use it as a pretty flower pot and buy another!
466371
It's normal for stains to develop on the clay pot. I always use a brush and water only to clean mine and I don't worry about any colorations on the pot. I have used mine a lot and it doesn't seem to affect the functioning of it. I always soak mine in water for about 15-30 minutes before actually placing it in the cool oven for cooking, however.
799021
I have never had that problem,I'm using it right now.SLOW COOKER for BEEF STEW with NOODLES. (5 hrs.)
929243
I haven't - it's probably deposits from your water supply adhering to the kettle while it's boiling I use only RO water (reverse osmosis) in my kettle and it looks brand new after more than a year of daily use. Try cleaning it with some CLR - that stuff works great on rust and hard water deposits
310976
No - mine has been fine the entire time. My only complaint is the fungal build-up... have to use vinegar every few weeks to clean it out.
1513304
Most likely is the juices of whatever your cooking mixed in with the water. If the interior surface of the cooker seems intact thats the most common cause. At high preassure this is pretty common.
466375
I have cooked in mine several times and I have dark stains. I think it may be normal
945689
Actually, I don'tworry about it. Clean the inside with a scotch bright type sponge. The black outside of the cup is inevitable, but actually helps conduct heat. All my cookwear has blackend exteriors.
704968
I boiled it the first time, then just used soap and water after that. I actually had to buy a new one because I put my first one in the dishwasher and it melted!
1235978
I have poured boiling water directly into my two units for many years without problems. I also put mine in the dish washer. Both are "crazed" probably from the dishwasher but work perfectly. I do not put mine in the microwave as the screens might be affected...but I really don't know for sure. I think the screens are made of a plastic material, but they might be extremely thin metal.
2023694
I have poured boiling water in for coffee, no problem. Washed up to as clear a finish as I began with! Hope this helps
1989289
No, mine looks great, almost like new even after a lot of use. I have quite of few stainless steel pots and pan and nothing like what you are describing has ever happened. In my never to be humble opinion it is not common.
929241
We have had ours for well over a year, in constant use, and the bottom, directly above the heat element, has discolored to nearly black. In addition there are brown-ish rust colored areas on the outside anywhere water drops tend to accumulate. Our water is known to have a measurable iron content, so it is hard to say if the pot is corroding or if the water is depositing iron salts onto the metal. Either way it is not harmful in any way. Iron oxide is not toxic, and any corrosion would confined to the very surface where it presents no hazard of "rusting though".