-: I am Theresa Moe, I am a product chemistry manager
and analytical team leader at Dow AgroSciences.
I actually have two roles and the first part
is the product chemistry manager,
and in that role we do the physical property testing
on our active ingredients
as well as our formulated products.
So, what's actually sprayed on the field.
When I say physical property testing,
that can be as simple as color and odor
and it can be more complex as UV VIS,
water solubility, studies like that.
So those studies will go onto our SDS
as well as in our package
that's submitted for regulatory submission
in addition to the physical property studies
we'll also develop and validate methods used
to analyze for active ingredients
in our formulated products,
and then we'll develop and validate methods
to use for our impurities in our active ingredients.
Typically we would use HPLC and GC for that type of work.
That all goes into the registration package as well,
and then the third part of my job then would be
what we call a batch analysis study.
So we'll take five different vats of our active ingredients,
analyze it for anything that could possibly be in there,
inorganics, processed related impurities,
residual solvents, things like that,
and we'll develop an impurity profile.
Then based on that impurity profile,
we'll set the maximum limit for our impurities
in each of the active ingredients
and that's why our manufacturing plants
we'll use to release product.
So we always have to be
in compliance with our impurity profile.