Phosphorous Acid is very different than Phosphoric Acid

Dutch · January 21, 2015

Phosphorous acid = H3PO3 (Also known as phosphate) As in Agri-Fos and Plant Doctor (formally Exel LG)

Phosphoric acid = H3PO4 (Also known as phosphorus) The “P” component in NPK fertilizers

More on this here by amideutch http://www.tomatoville.com/showpost....08&postcount=7

I do believe at one time Agri-Fos and Exel LG were both ORMI certified. My guess is that someone put the idea in the heads of some people in the ORMI sanctioning body that H3PO3 and H3PO4 were similar. In reality they are no more similar to each other then carbon dioxide is to carbon monoxide.

Carbon Dioxide = CO2 – All animals breathe this out and all plants take this in great quantities.

Carbon Monoxide = CO – Deadly to all animals and plants at anything above 667 parts per million.

What a different one little number can make!!!

Dutch

January 21, 2015	#1
Dutch Tomatovillian™ Join Date: Jan 2011 Location: S.E. Wisconsin Zone 5b Posts: 1,831	Phosphorous Acid is very different than Phosphoric Acid Phosphorous acid = H3PO3 (Also known as phosphate) As in Agri-Fos and Plant Doctor (formally Exel LG) Phosphoric acid = H3PO4 (Also known as phosphorus) The “P” component in NPK fertilizers More on this here by amideutch http://www.tomatoville.com/showpost....08&postcount=7 I do believe at one time Agri-Fos and Exel LG were both ORMI certified. My guess is that someone put the idea in the heads of some people in the ORMI sanctioning body that H3PO3 and H3PO4 were similar. In reality they are no more similar to each other then carbon dioxide is to carbon monoxide. Carbon Dioxide = CO2 – All animals breathe this out and all plants take this in great quantities. Carbon Monoxide = CO – Deadly to all animals and plants at anything above 667 parts per million. What a different one little number can make!!! Dutch __________________ "Discretion is the better part of valor" Charles Churchill The intuitive mind is a gift, and the rational mind is a faithful servant. But we have created a society that honors the servant and has forgotten the gift. (paraphrased) Albert Einstein I come from a long line of sod busters, spanning back several centuries.