[Clayart] whiting test

Robert Harris robertgharris at gmail.com
Sat Jan 25 01:18:59 EST 2014


Oh just to add - if it's dolomite you can do some fairly straightforward
density tests but you'd need a pretty sensitive scale and measuring
cylinder - if you have these I can give you more accurate instructions.


On Sat, Jan 25, 2014 at 1:16 AM, Robert Harris <robertgharris at gmail.com>wrote:

> Put it in some acid. It will fizz. Vinegar should work, something slightly
> stronger such as muriatic acid will give a more obvious fizz.
> The only other common (whitish), glaze chemical that will fizz (evolving
> CO2) is dolomite (CaCO3 vs CaCO3.MgCO3 (mixed)). If it's dolomite it's
> practically exchangeable with whiting anyway, and you can start testing
> your normal recipes with it.
>
> Robert
>
>
> On Fri, Jan 24, 2014 at 8:06 PM, Amy Romaniec <highhorsefarm at hotmail.com>wrote:
>
>>
>>
>> > How could one test a bag of "whiting" that was given to us.to be sure
>> it is whiting?
>> Is there a simple way of knowing .
>> maybe mix a small glaze batch or something???
>> for that matter   say dolomite or silica etc.
>> would not like to just throw it over the hill  but that could be done too
>> LOL
>> Thank you
>> Amy
>> highhorsefarm.com
>>
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>>
>
>
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