>>I took a shed Puff Adder fang from a specimen that was 15 to 20 inches long. See image below. This ~1mm fang could only hold ~ 9ul of water at 20 Deg C. Clearly not enough venom to require 8 vials of SAVP Polyvalent to counter-act.

Physics? Did someone say physics?

Actually, it's more like geometry this time. The person who reported the accident said his puff was "4 feet" which would make it up to 3 times the length of your specimen. Assuming for the moment that the fang size in proportional in all three dimentions (a big assumption) that would make it's internal volume 27 (3^3) times as much or about 540 ul (0.54 ml). While I've seen a lot of info about the minimum dose to cause death (at least in mice) I haven't seen much about the minimum dose to cause significant reaction, so I don't know how they compare. I will therefore claim ignorance as a conclusion...and no doubt many will agree.

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