[Galina, your email address has changed. This is either due to your
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> Apart from the above potassium and ammonium dichromate are
> interchangeable.
>
>> I see the Potassium variety refered to the most.
>
> That is just force of habit.
>
>> I've read Ammonium is more dangerous to use.
>
> Only because a saturated solution is stronger. Don't breathe it, don't
> eat and if you get on your skin wash it off straight away.
I use potassium, because it is used less concentrated. I try to have
minimal quantity of chemicals, to protect health and nature. I was
forbidden to use dichromates at the academic institutions in Sweden and
had to use polymer emulsions instead. But I don't really know if a small
amount of potassium dichromate is as bad as a big quantity of ammonium
dichromate. Are there some experts on the list to comment on this?
Thank you. Galina.
galina@online.no