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#11
posted to rec.boats.cruising
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washing fruits and vegetables
On Nov 19, 7:04 am, brian whatcott wrote:
Chris wrote: ... FDA or CDC websites for more accurate information. Bleach and peroxide were mentioned, and they are probably good. I have also heard that potassium permanganate is also effective, but it might be harder to get a hold of. Good luck, Chris All strong oxidizers. I think potassium permanganate, that former favorite of chemistry sets for kids, is now discouraged as carcinogenic Brian W Wikipedia (I know, not always the best source) has this: "Almost all applications of potassium permanganate exploit its oxidizing properties.[2] As a strong oxidant that does not generate toxic byproducts, KMnO4 has many niche uses." and this: "As an oxidant, potassium permanganate can act as a disinfectant. For example, dilute solutions are used to treat canker sores (ulcers), disinfectant for the hands and treatment for mild pompholyx, dermatitis,[4][5] and fungal infections of the hands or feet.[6] Potassium permanganate, obtainable at pool supply stores, is used in rural areas to remove iron and hydrogen sulfide (rotten egg smell) from well and waste water. Historically it was used to disinfect drinking water.[7]" Chris |
#12
posted to rec.boats.cruising
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washing fruits and vegetables
On Wed, 25 Nov 2009 05:31:13 -0800 (PST), Chris
wrote: On Nov 19, 7:48 am, Gogarty wrote: In article , says... On Nov 13, 9:04 pm, Joe wrote: On Nov 12, 9:43 am, Hanz wrote: I have also heard that potassium permanganate is also effective,but it might be harder to get a hold of. That's the word! That's the word! In college we used to make a glass cleaning solution that consisted of potassium permanganate and sulfuric acid. Wicked stuff, but your lab glassware got really, really clean. I kind of doubt that. This from Wikipedia: "Solid KMnO4 is a strong oxidizer and thus should be kept separated from oxidizable substances. Reaction with concentrated sulfuric acid produces the highly explosive manganese(VII) oxide (Mn2O7)." http://en.wikipedia.org/wiki/Potassium_permanganate Chris BUT, the glassware would be so clean..... why, you could hardly see the pieces :-) Cheers, Bruce (bruceinbangkokatgmaildotcom) |
#13
posted to rec.boats.cruising
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washing fruits and vegetables
Chris wrote:
On Nov 19, 7:04 am, brian whatcott wrote: Chris wrote: ... FDA or CDC websites for more accurate information. Bleach and peroxide were mentioned, and they are probably good. I have also heard that potassium permanganate is also effective, but it might be harder to get a hold of. Good luck, Chris All strong oxidizers. I think potassium permanganate, that former favorite of chemistry sets for kids, is now discouraged as carcinogenic Brian W Wikipedia (I know, not always the best source) has this: "Almost all applications of potassium permanganate exploit its oxidizing properties.[2] As a strong oxidant that does not generate toxic byproducts, KMnO4 has many niche uses." and this: "As an oxidant, potassium permanganate can act as a disinfectant. For example, dilute solutions are used to treat canker sores (ulcers), disinfectant for the hands and treatment for mild pompholyx, dermatitis,[4][5] and fungal infections of the hands or feet.[6] Potassium permanganate, obtainable at pool supply stores, is used in rural areas to remove iron and hydrogen sulfide (rotten egg smell) from well and waste water. Historically it was used to disinfect drinking water.[7]" Chris Here's the MSDS. Not a carcinogen, but harmful if inhaled as a powder. http://www.jtbaker.com/msds/englishhtml/p6005.htm Brian W |
#14
posted to rec.boats.cruising
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washing fruits and vegetables
On Fri, 13 Nov 2009 20:28:27 +0700, Bruce
wrote: Certainly if you can smell it you have enough; in fact you have more then you need. The threshold for smelling Cl is one part per million. One gram per ton. Casady |
#15
posted to rec.boats.cruising
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washing fruits and vegetables
On Sun, 29 Nov 2009 07:43:15 -0600, Richard Casady
wrote: On Fri, 13 Nov 2009 20:28:27 +0700, Bruce wrote: Certainly if you can smell it you have enough; in fact you have more then you need. The threshold for smelling Cl is one part per million. One gram per ton. Casady Depends on the nose I suppose, but actually the quote comes from the Water Supervisor at Udon Airbase in the days I worked there. I had dosed a well with what seemed to be a small amount of sodium hypochlorite and turned the water into Clorox and since I had gotten the stuff from the Water Plant I went back to bitch, whereupon I was given a water test kit and the instructions that "you use less then you think is enough" together with the "if it stinks you got too much" statement. Cheers, Bruce (bruceinbangkokatgmaildotcom) |
#16
posted to rec.boats.cruising,soc.culture.thai
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washing fruits and vegetables
On Mon, 30 Nov 2009 07:37:40 +0700, Bruce In Bangkok
wrote: On Sun, 29 Nov 2009 07:43:15 -0600, Richard Casady wrote: On Fri, 13 Nov 2009 20:28:27 +0700, Bruce wrote: Certainly if you can smell it you have enough; in fact you have more then you need. The threshold for smelling Cl is one part per million. One gram per ton. Casady Depends on the nose I suppose, but actually the quote comes from the Water Supervisor at Udon Airbase in the days I worked there. I had dosed a well with what seemed to be a small amount of sodium hypochlorite and turned the water into Clorox and since I had gotten the stuff from the Water Plant I went back to bitch, whereupon I was given a water test kit and the instructions that "you use less then you think is enough" together with the "if it stinks you got too much" statement. Cheers, Bruce (bruceinbangkokatgmaildotcom) ROFTL!!!!!!!! "at Udon Airbase in the days I worked there" Another hilarious raving from the megalomaniac jBangkok dork. "if it stinks you got too much" AH! AH! AH! AH! AH! AH! The fartbag fully deserves his nickname of "Brown-eyed Mullet" Mort "there are no docks in Bangkok" - by Bruce-in-Bull**** aka GSS, on 9 July 2009 |
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