Spanish to English Science Science (general) abbreviation

Hi all -

Happy holidays!

I am translating a document from French to English written by an Dutch manufacturer to to a lab in Barcelona.

However there are handwritten notes in the margin in Spanish.

Two read "At the lab followed by a date.
However the second handwritten note in the margin has added:
a D.O.M.B.

I was wondering if anyone might hazard a quess as to what these letters stand for.
I am categorizing this abbreviation as scientific although it may belong in another category.

Thanks

Thanks!