Hey, how long can i have the MHRB and lye mix in a container with out lossing anny dmt. or is it possible to lose anny at all?
And what about the MHRB/Lye/heptan mix, can i put it away for a couple of days, without lossing anny dmt. and how long can i store the mix??
(ps im just using hepthan becouse its easyer to get a hold on here)

Depends on the container.

We have heard reports of HDPE jugs springing leaks over months time. The plastic is literally eaten away. Yikes!

A couple days is perfectly fine. A couple months is asking for it.