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Posted 12/28/2013 12:25 pm
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LincolnGuy yu are right and wrong at the same Refined olive oil is the olive oil obtained from virgin olive oils by refining methods that do not lead to alterations in the initial glyceridic structure. It has a free acidity, expressed as oleic acid, of not more than 0.3 grams per 100 grams (0.3%) and its other characteristics correspond to those fixed for this category in this standard. This is obtained by refining virgin olive oils with a high acidity level and/or organoleptic defects that are eliminated after refining. Note that no solvents have been used to extract the oil, but it has been refined with the use of charcoal and other chemical and physical filters. Oils labeled as Pure olive oil or Olive oil are primarily refined olive oil, with a small addition of virgin-production to give taste . QUANTitative anaysis can determine the oil's "Acidity", which refers NOT to its chemical acidity in the sence of PH (Wrong here LincolnG)but as the % (Measured by weight) of free oleic acid. this is a measure of the hydrolysis of the oils triglycerides : as the oil degrades, more fatty acids are freed from the glycerides, increasing the level of free acidity and thereby increasing hydrolytic rancidity. Another measure of the oils chemical degradation is the peroxide value, which measures the degree to which the oil is Oxidized. Different types of olive oil hav free fatty acid content of .8g per 100g or .8% ,some have 2%..To sum it all up yu are partially right--about Acid in future of coin...I worry about the future numismatists who get an unprotected coin and the Oxidation---So MS 1cents I leave alone- but low value lincolns I wipe with olive oil....Other ways to protect a coin are not as natural as Olive oil....keep paper and cardboard away from coins because of Acid.....
LincolnGuy yu are right and wrong at the same Refined olive oil is the olive oil obtained from virgin olive oils by refining methods that do not lead to alterations in the initial glyceridic structure. It has a free acidity, expressed as oleic acid, of not more than 0.3 grams per 100 grams (0.3%) and its other characteristics correspond to those fixed for this category in this standard. This is obtained by refining virgin olive oils with a high acidity level and/or organoleptic defects that are eliminated after refining. Note that no solvents have been used to extract the oil, but it has been refined with the use of charcoal and other chemical and physical filters. Oils labeled as Pure olive oil or Olive oil are primarily refined olive oil, with a small addition of virgin-production to give taste . QUANTitative anaysis can determine the oil's "Acidity", which refers NOT to its chemical acidity in the sence of PH (Wrong here LincolnG)but as the % (Measured by weight) of free oleic acid. this is a measure of the hydrolysis of the oils triglycerides : as the oil degrades, more fatty acids are freed from the glycerides, increasing the level of free acidity and thereby increasing hydrolytic rancidity. Another measure of the oils chemical degradation is the peroxide value, which measures the degree to which the oil is Oxidized. Different types of olive oil hav free fatty acid content of .8g per 100g or .8% ,some have 2%..To sum it all up yu are partially right--about Acid in future of coin...I worry about the future numismatists who get an unprotected coin and the Oxidation---So MS 1cents I leave alone- but low value lincolns I wipe with olive oil....Other ways to protect a coin are not as natural as Olive oil....keep paper and cardboard away from coins because of Acid.....
LincolnGuy made no wrong statements. He didn't say "pH", he correctly referred to "acidity" of olive oil.
Olive oil is a highly variable mixture and it is acidic. It is NOT a coin safe solvent and the end-user has no way of producing consistent results. I see the recommendation to use it on coins all of the time on the internet when, in fact, it is a HORRIBLE solvent to use. I have seen hundreds of coins damaged by it. The acids will corrode the surfaces and the oil will alter the patina.
If you're "wiping coins" with it and leaving it on the surfaces, you are creating the perfect conditions for permanent surface damage as the acids eat into the coin and the oil degrades and promotes bacterial growth (which also adds acidity). Acid and metal do not play well! They should generally NEVER be used on coins if you wish to preserve the surfaces.
Colonial A is selling 9 and half pounds of mixxed world coins...for a cheap price,,because as they also say the coins hav rust on them.....They say up front all 9 punds are basically uselesss coins.....If I bought these what would be the Verdi-care fluid cost? If I put on olive oil I would wipe off again after overnight or even hour later sometimes,,look at then under loop (Magnify glass),, then staple 2X2 holder, I do occasioally wipe even a cu-ni coin but not many, wipe off in circle motion later,,A collector buddie of mine uses Mineral oil for his Lincolns.....What is the "Acidity" of the v-fluid (.8%)? Other coin fluids to use?
What about the unprotected Salt&vin coins do we agree Unprotected, or stripped What about this?
What is PH of v-fluid?
That is a good joke about Robber Element....
