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Can always buy a test kit and see what it comes up with. For here is what I found on Amazon, comes with 8 tests. Probably not a bad idea to have around if you are into buying vintage cast iron.
3M LeadCheck Swabs, 8-Pack [link]
It looks like speckled clay, which is typically achieved with an addition of granular manganese. It could just be a larger piece of manganese that discolored the glaze.
If you're worried about it, you can buy lead test kits at most home improvement stores or even Amazon.
Summoning /u/dog22222 to see what he thinks.
I did not, but you can get the swabs here
Remember that lead is dangerous if you ingest it, so if the paint pattern is worn or chipping off while you use it, then you might accidentally ingest it. My parents had Corelle dishes growing up and ours held up really well, never had any paint chipping.
You are also probably much more likely to be exposed to lead via tap water than you are from dishes.
As far as I know, they have no brands. How can I know which one has no lead? I guess I could know it by first purchasing it and then testing with this kind of lead tester, but that will not be very cost effective.
I've used this in the past, you'll have to check that it also works for glass/glaze but I think it does! Remember to double check a negative test by swiping the test card
Pretty sure I proved it here, if you can follow the thread.
You’ll want this for your kool-aid:
If you DM me your address I can get them mailed to you. Worried about your health.
Dare you to test the paint for lead.
It’s all fun and games until you start to seriously think about WHY these things are cheaper.
Get yourself a lead test kit. They are very easy to use and you’ll know for sure in seconds. As there is already a bunch of damage to the paint, even cleaning those chips up could be hazardous to you. When that’s done, get some liquid paint stripper (Citristrip works well and smells like oranges) and follow directions on the bottle.
But before you restore it, check it for lead unless you know for certain it was never used to melt lead.
I went through this with my son around one as well, For 6 months his levels where elevated.
Call your doctor and ask who they would recommend you speak to about lead being in the home. My doctor sent me to my local county health authority. They came out and inspected my house from the floor up. We discovered our issue was an old built in cabinet and had it removed. Other options are avail even though.
They explained that you can buy lead test sticksamazon carries them as well as most hardware stores and can test the house yourself. You will want to start in areas your toddler frequents, and start low aka their level. Document all areas that pop positive for lead.
I would be very careful about sanding. I’d put all the money I have in the bank that there’s lead there. I would test the surface and then test as you’re sanding and removing layers. If it turns positive then stop. Lead was very common in stains and clear coats back in the day, so even non-painted surfaces will test positive. All of the wood trim in my 1900 house tests positive.
You can buy lead test kits fairly cheap [link]
It's worth it just to know what you're dealing with. If they have lead content just keep them out of reach of children and pets and wash your hands after playing... and don't lick the stones.
You can get lead check test strips from places like Amazon and some hardware stores. I don't know how accurate or precise they are. I think I've also seen kits that are more water quality tests that you can send off for analysis available in hardware stores.
This is the test I used:
3M LeadCheck Swabs, 8-Pack
I'd have a worry in the back of my head about someone using it to melt down lead.
I'd probably use something like this to give me peace of mind.
I recently bought this set on Amazon: [link]
I don't know if anyone has a better suggestion. It's expensive, but I figured it was important enough to do right.
Wouldn't testing it with a lead test kit tell you one way or the other?
You should be able to go to a hardware store and get some lead paint testing swabs (or try Amazon). Then it's a simple matter of using the swabs and observing whether they turn red or not. https://www.amazon.com/3M-717834209102DUPE-LeadCheck-Swabs-8-Pack/dp/B008BK15PU/ref=sr_1_1?ie=UTF8&qid=1527950417&sr=8-1&keywords=lead+testing+swabs
3M LeadCheck Swabs, 8-Pack [link]
You can get a 3M test kit from Amazon if you must know.
There are lead test kits you can get pretty cheap on Amazon. You'll get results within a minute
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I think Home Depot and Lowe's also sell them.
topic: lead-based paint
In the US there are test kits like this
and there are professional devices for detection like these: [link]
But when I ask companies dealing with similar stuff in Taiwan, nobody seems to know how to deal with lead problems.
Is this because Taiwan doesn't / has never used these, or is it just one of those issues nobody cares about here? Does anyone have recommendations for companies that could help with this?
LeadCheck Swabs, Instant Lead Test, also available @ HD/Lowes or Sherwin-Williams.
Have you thought about doing a lead test?
My initial thought was that it might have been for melting metal but I genuinely have no idea.
You can also get them on Amazon. I found the price for a 6 or 8 pack on Amazon was much cheaper per test than for a two pack at my local Home Depot. Note that the packages look exactly the same - I bought a couple of packs at HD and opened them up and was pissed that I was missing most of the tests. Then I realized the bottom of the package said "2".
I was testing my whole house, it's possible you only need a couple.
You remove the seasoning down to bare metal then you use a lead contamination test strip It's fairly straightforward how to use the swabs [link].
You may want to test for lead in
and Tap Water
Lead tests are cheap and easy to get - [link]
Buy a test kit
This is the test kit. It's the 3M LeadCheck Instant Lead Test Swabs. I believe they're in one of the paint aisles.
You can also order them from Amazon.
Melting temperature? Perhaps a lead test kit like this?
In order to have a electronic detector, you would probably need to do something to get the lead out of the solid phase.
while chances are very good that it's safe I've used this before for peace of mind http://www.amazon.com/3M-717834209102DUPE-LeadCheck-Swabs-8-Pack/dp/B008BK15PU/
Leeching would be a better test than surface though, and I haven't used it myself but this is available http://www.amazon.com/gp/product/B001768RHY/
Invest in a lead test kit. That mug looks old enough to be dangerous, but it is better to test than speculate.