As modern methods of growing GMO crops designed to be immune to Round Up or glyphosphate formulations of which four ar most common, the metabolites of Glyphosphate called aminomethylphosphonic acid (AMPA) are becoming the main contaminants in water shed reservoirs.
All Roundup formulations in the study, along with their individual chemical ingredients tested at concentrations from ranging 10 ppm (parts per million) to 2 percent (the recommended agricultural usage level), which means that the Roundup formulations were diluted up to 100,000 times or more than normal usage and recommendations.
In the study Round Up brands were exclusively studied. Proprietary formulations of the products examined showed that the presence of the other chemical ingredients such as POEA, actually amplified glyphosphate’s toxic effects.
The toxicities of the Roundup formulations were not proportional to the amount of glyphosphate they contained, and are most likely due to POEA and other as yet undisclosed ingredient(s) present in all the formulations. POEA by itself is much more toxic than the Roundup formulations, while AMPA is more toxic than glyphosphate.
The combination of lethal chemicals found in Round Up point to 100% cell death when the living cells of the placenta, embryonic cell line and the umbilical cord vein were tested invitro.
With the surfactants and nature chemicals included in Glyphosphates readily crosses the blood barrier to those whom come into contact with it.
http://www.i-sis.org.uk/DMPGR.php

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While diluting one has to be very careful with the percentage concentration.….