Hi all, I am not familiar with the current Clarkson product. When I used them in the past as a supplier it was the Weigert Formulation in plastic. Our Lugol's is shipped in amber glass, is USP and states that clearly. If Clarkson has changged their labeling and bottle pack I stand corrected with respect to that. Nonetheless, having offered Lugol's for sale long before the advent of the internet, I still feel our product is superior.
Cheers once again_
Jeff@Crows