English translation: bluing (blue rinse or tint) - preserver
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Robert INGLEDEW Argentina Local time: 07:27 Native speaker of: English, Spanish PRO pts in pair: 1940
Gracias a los dos....
Perdonen el retraso ;-)
5 hrs confidence:
bluing / preservative
Explanation: I would agree with Robert on the bluing part, but "conservante" is usually translated as preservative.
Here's a ref. on the bluing:
The house was finished, inside and out, with handmade plaster to which laundry bluing had been added to give brilliance. Except for some patching over the years the interior and exterior finishes are of the original clay, straw and animal dung plaster commonly used by Ukrainian pioneer builders. http://www.ltc.sk.ca/negrychs_venlaw.htm