When trying out a new brand I usually weigh a couple of used diapers, usually I remove them went I start of question their capacity, put them on the scales after looking at them, normally you can tell, but very few diapers other than Abri Form XPLus L4 get close to 2kg loaded, and couple of other specialty AB/DL brands, thats around 2000ml, I'm not sure of the actual specific gravity of piss, but it cant be far of water...... so around 2000ml.
Thats around half their quoted weight. as I understand the human bladder is around 600ml a go, I'd rate a 1200ml diaper a one go unit, but wicking also is a major factor.
You can load a Abena abri form L4 up close to 3000ml, but you are depositing small amounts over time and standing.
So for me with a premium type its 3 voids and I'm looking to change, if a Forth (4) happens ok I should get away with it, but Five (5) I will expect leakage. minor but leakage and leaky piss is never nice.
ALEAKYBOOMBOOM!