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Re: Cleaning Copper the Easy Way

PostPosted: Sat Aug 22, 2020 1:11 pm
by B-Man
i read the bottle of CLR and it says not to use it on copper???

Re: Cleaning Copper the Easy Way

PostPosted: Fri Sep 04, 2020 2:11 pm
by Chriss
Indeed, Diggers CLR removers says do not use on copper. www.recochem.com.au
41g/L Sulfamic Acid UN 3264

Re: Cleaning Copper the Easy Way

PostPosted: Fri Sep 04, 2020 10:03 pm
by Sam.
Probably cleans it too well, ie pits it

Re: Cleaning Copper the Easy Way

PostPosted: Fri Nov 27, 2020 9:25 pm
by OzDistilling
CLR can be a toxic cocktail. It can contain;
    water
    lactic acid
    gluconic acid
    lauramine oxide
    propylene glycol
    n-butyl ether
    glycolic acid
    sulfamic acid
    disodium capryloamphodipropionate
    ethylene glycol n-butyl ether
    citric acid

Industry uses either sulphuric or nitric acid (10-40%) plus 1:10 addition of Hydrogen peroxide (10%) and some propylene glycol for spotting resistance, all food safe Rinse well after treatment, alkaline passification is not needed.

Re: Cleaning Copper the Easy Way

PostPosted: Fri Nov 27, 2020 10:42 pm
by Sam.
OzDistilling wrote:CLR can be a toxic cocktail. It can contain;
    water
    lactic acid
    gluconic acid
    lauramine oxide
    propylene glycol
    n-butyl ether
    glycolic acid
    sulfamic acid
    disodium capryloamphodipropionate
    ethylene glycol n-butyl ether
    citric acid

Industry uses either sulphuric or nitric acid (10-40%) plus 1:10 addition of Hydrogen peroxide (10%) and some propylene glycol for spotting resistance, all food safe Rinse well after treatment, alkaline passification is not needed.


Mate you realize this is a hobby forum?

Re: Cleaning Copper the Easy Way

PostPosted: Sat Nov 28, 2020 5:26 pm
by Permaclutter
It is fun to try to say the third to last one.

Re: Cleaning Copper the Easy Way

PostPosted: Sat Nov 28, 2020 5:36 pm
by bluc
:laughing-rolling: