/sci/ - Science & Math

Question for medfags. I am putting together a first aid kit for hiking/backpacking/mountain biking. I want to include an NPA. Or I guess a few since they come in different sizes. I don't understand the sizing.
Wikipedia's NPA article says that sizes are, for example, 7mm=30FR
Whereas a thread on emtlife.com says that sizes are, for example, 7mm=21FR (where French size is always 3x the millimeters).
I have seen several sources claiming the former, and several claiming the latter.
What the fuck is up with the sizing?
And what sizes should I get if I want to have a few of the most commonly needed sizes?
According to people going by the latter sizing method, 8mm/24fr, 7mm/21fr, and 6mm/18fr would be most common sizes, but then some sources claiming the sizing is different fucks it all up, i.e. Wikipedia says typical sizes are 6.5mm/28FR through 8.5mm/36FR.
What the fucking fuck is up with this inconsistency?
Thanks

Question for medfags. I am putting together a first aid kit for hiking/backpacking/mountain biking. I want to include an NPA. Or I guess a few since they come in different sizes. I don't understand the sizing.
Wikipedia's NPA article says that sizes are, for example, 7mm=30FR
Whereas a thread on emtlife.com says that sizes are, for example, 7mm=21FR (where French size is always 3x the millimeters).
I have seen several sources claiming the former, and several claiming the latter.
What the fuck is up with the sizing?
And what sizes should I get if I want to have a few of the most commonly needed sizes?
According to people going by the latter sizing method, 8mm/24fr, 7mm/21fr, and 6mm/18fr would be most common sizes, but then some sources claiming the sizing is different fucks it all up, i.e. Wikipedia says typical sizes are 6.5mm/28FR through 8.5mm/36FR.
What the fucking fuck is up with this inconsistency?