The canister in Landon's bag is labelled 'C2H0O' (with the numbers onscreen as superscripts) which is scientifically meaningless. Scientific formulae either give a subscript number (to specify how atoms of an element are in each molecule) or none (which means that there is one atom of the specified element per molecule). Moreover, this formula, even if a realistic number of hydrogen (H) atoms had been specified, had nothing to do with the complex composition of a protein like ricin.
It was established early on that the ricin was prepared from the Carmencita pink strain of jack beans. One isolated, there would be no way to distinguish the pure ricin from different sources, since the protein would be identical, no matter what strain it had been isolated from. However, agents repeatedly referred to the material used as being from the same strain as that held at the research lab.
When Jessica was discovered collapsed, Maggie or OA should have immediately called for an ambulance. They could easily have done so over comms, rather than delaying to make a phone call, while they were getting her out of the building.
Maggie said "The same strain of castor beans were used..." That should have been "The same strain...was used."