Menarite processor's recipe has 95% chance to produce an empty dewar which means the ratio of liquid nitrogen and empty dewar is 100 : 95. But the problem is when pluging 4 productivity modules the ratio will increase up to 100 : 133 which is ridiculous. It means we will get more and more dewars stacked in chests.

Maybe the chance of producing dewar should be less than 70% so that the ratio with 4 productivity modules still less than 100%.

Liquid nitrogen and dewar - marked as a catalyst. Catalysts do not get the effect of productivity.

Got it. Thanks for your explanation!