Where do i find this??

Hi. I am interested in making some PMMD but i am unsure where to find a
particular ingrediant.  Where can i locate (a name of a store would be great)
Chelated Trace Element Mix (7% Fe, 1.3% B, 2% Mn, 0.06% Mo, 0.4% Zn, 0.1% Cu,
EDTA, DTPA)??? Also, what exactly is EDTA and DTPA???

thank you so much for the help!!!
aka....Griff1324 at aol_com