gas washing bottles with SECURITY SINTERED DISC use
hello,
I make a fast look at the "new" gas washing bottles, finally!
some have a ceramic "stopper" in the lower mouth with porosity 0, 1, 2. This is the same with SECURITY SINTERED DISC?
porosity 0 for what? and 1, and 2??? this scale is more a personal choice or for security reasons or...???
diferences with the classic open tube?? I think the porosity is for gas best dissolution, right? but how to clean a porous porcelain disk?
where I can find one of this?
https://www.labrotator.com/?product=gas-waschflasche-150-ml-...
this is an advanced concept in GWB???
I love sting punk and comunist glassware!!! 
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