My understanding is that there is some form of reasoning behind the 100mL limitation. Sufficiently easy to procure liquids can blow up a plan when they are in a container bigger than 100mL (300mL, 1L, I don’t know what the findings were).
Now, what I do know is that pouring liquids together in a largers plastic bag is very easy, you can do that inside a backpack. I had to do this multiple times due to leaky milk bottles, leaky shampoo bottles, etc. The plastic bag simply has to be strong enough to stay in form while filling up.
Hence my point that this 100mL limitation is useless (from a volume limitation point of view), and I assume (not an expert on explosives) that if there was a limitation at 100mL, there must be something dangerous enough above this volume. Hence the overall regulation is useless.
Hope it clarifies my reasoning.
