XS Scuba AL-40 bottles

[CAPTAIN SINBAD]

Hey everyone,

There are a lot of people on scubaboard who love the Luxfer AL-40 decompression bottles. The Catalina AL-40s are not very liked because they have a negative bottom and ride funny when they are slung. I understand that XS scuba AL-40 are Worthington AL-40s. Do they match the buoyancy traits of Luxfers or Cats? Can anyone who has used these shed some light on their buoyancy and how they trim?

 

[Got2Go]

Just FYI...I have not used the Worthingtons...

I have only used the Luxfer 40...but XS Scuba has both.

LAL40 = Luxfer
AL40 = Worthington

Buoyancy full:
LAL40 = -0.7
AL40 = -1.5

Buoyancy 500PSI:
LAL40 = +1.8
AL40 = +1.0

Both are 15.3 Lbs no valve weight.

 

[Jack Hammer]

I have 4 al40s. I'd have to go look at them to see what brands they are. At lesst one each of Catalina and Luxfer , and I believe I have a Worthington or a Hymark too... I can only tell there's a difference between them if I'm diving them together, which is pretty rare. I have a bunch of al80s from the same manufacturers and frequently dive whatever is handy in any combo, i really dont notice any difference. YMMV