How long can you expose a scrubber to air?

[broncobowsher]

But there is also the moisture weight. How dry or moist the scrubber is will change the weight. Lab conditions where you control the moisture you can weigh and know. In dive gear, looking at how much water is in the lungs after a dive. That water weight will be another unknown.

One factor I don't think I have seen flow through this thread so far, airflow. Just being exposed to air is far different than being exposed to a flow of air.

 

[rjack321]

I have it in my head that the scrubber gains mass as it absorbs co2. With a sufficiently precise scale and if you could control other environmental factors, I suspect you could get useful data.

Yes except from a practical perspective it's not reliable or very realistic to control for moisture content.

 

[kensuf]

Newer CCR divers have no way of intrinsically knowing this stuff, it’s a legitimate question. Should it be brought up in class? Probably so but that doesn’t mean one shouldn’t ask questions later.

Forums are dying as other social media takes over; forum etiquette of search before posting is dying with it.

If we want to prevent the death of this forum we should probably relax the aforementioned etiquette.

If you don’t like the question, move along.




I have it in my head that the scrubber gains mass as it absorbs co2. With a sufficiently precise scale and if you could control other environmental factors, I suspect you could get useful data.

As always I reserve the right to be FOS

I'm actually happy to get engaged on a question that "has been answered before." Things change, ideas change, procedures change. If all people did was hit search and dig up old threads and say to themselves "OK, this question I had was answered in 2003, there we go" we would find ourselves doing things such as:

* Running VPM for decompression and embracing deep stops to reduce the duration of shallow stops
* Taking a packed scrubber that was partially used, dumping the contents onto a cookie sheet, and warming it up in an oven to "recharge" it
* Using O2 cells in our CCR for more than 18 months
* Diving air to 200' in our rebreathers

And more...

 

[Mobulai]

If all people did was hit search and dig up old threads and say to themselves "OK, this question I had was answered in 2003

I like to re-engage (lot of times asking not answering) on “old topics” as well — a lot actually
But I also appreciate “zombie threads” a lot; search-ability goes down when I don’t know which thread to start from and the newer posts will always show first and sometimes burying down great old wisdom

It aint the end of the world when a new thread with the same question starts, but the UI makes it pretty straightforward to see if “it was asked before” and that’s a pretty good tip to maybe read and ask followups in an already populated thread

There’s nothing new under the sun, and questions is how anyone learns either way

 

[rddvet]

I'm actually happy to get engaged on a question that "has been answered before." Things change, ideas change, procedures change.

I agree to a point. It feels like this topic keeps coming up over and over lately. If it was 5 year old info that's one thing. But I've been seeing these discussions repeated in multiple places including here
More importantly people want a hard, fast rule on this topic and they don't understand we will likely never have one other than if you want to be safe as possible, dump your sorb if you have to question it

 

[mr_v]

Or read "Breakthrough."