Oxalic Acid in a crystal form

[breck]

Just a quick one what do you recommend for larger crystal cleaning .
I have some Oxalic acid amounts per litre of water ?

Cheers

 

[AtomRat]

If your only cleaning quartz, you only need a couple of teaspoons in a cup of water. If it doesn't work the best first go..add more second round oxalic won't eat the crystal away

 

[breck]

thanks will give it a burl