I'm not going to go back and forth with you on this as I already have once before, but I will say you are spreading a lot of false information and I have seen you do it multiple times across the forum.
There is a shelf life, three years. The bacteria are processed by flash freezing and are dormant. They are not live bacteria and because of the way they are processed for bottling, they bottles can have a long shelf life. They are processed this way to be able to handle extreme high and low temperatures throughout the year.
It does not multiply in our tanks and does need to be added in increments, this is standard for many bacterial products ( AF, Probidio, Zeovit, Brightwells, Red Sea, Etc. just to name a few ).
You can find it under a microscope, You just need the right gear. This is not some brown gunky type, stinky bacteria that most people think of when they they think of bottled bacteria. I never said anything to you about culturing in our tanks, what I did say to you was, culture the bacteria and see what you end up with. This will give you a better idea of what bacteria strains are present. A few people have studied Vibrant pretty extensively and there are videos on YouTube showing the cultures, etc. Jason2459 Did some pretty extensive studies with it here on R2R in his biology thread with videos, etc. as well.
As for the dosing instructions, 1ml times x amount whether it be 10 gallons or 25 gallons is pretty much the gold standard for aquarium additives and dosages. As for snails and urchins dieing, that is just not true from Vibrant. What can cause snails and urchins to die are toxic strains of dino die off or the release of heavy metals, toxins, etc. being released into the water as the algaes are being consumed. This is like a one and ten thousand usage case, far from common.
I would love to see these essays if you would be so kind to put me into touch with this gentlemen