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TaNg said:
If you look at the orange sticker in the top corner of the box it says something like 'RC 4/12 certified carbon' does this tell the quality of the carbon?
I've only used 2 types in the past,my first was a Buddha which cost £17 and lasted no more than 6 months I then went Rhine Pro which seem to last 18 months. The 100mm Rhinos are about £40 the same as Phresh and the Red Scorpion in trying, in due to change my other rooms soon so looking forward to your thread.
Thanks for the advice bro gonna have to tickle u with some rep.
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Take all this with a grain of salt because I'm still compiling notes on everything (already have a few pages!) but this is a bit of what I've drummed up so far.

The 412 in the "RC 412" is referring to the mesh sizing distribution of the carbon. The carbon is run through two screens (or sieves,) trapping only the desired range of particle sizes. The 412 is actually 4 mesh x 12 mesh, which means it will have particles smaller than 4 mesh (4760 microns) but larger than 12 mesh (1680 microns.)

Think of it like this:

X = range of particle size of the carbon used
In 4 x 12 mesh,
X < (is less than) 4760 microns in particle size
X > (is greater than) 1680 microns in particle size

So there should be a range of carbon particle sizes of 1680-4760 in RC 412 activated carbon.

The other common mesh size is RC 48, which you'll see on other carbon scrubbers (big name brand ones too!) That's 4 mesh (4760 microns) and 8 mesh (2380 microns,) so there again should be a range of 2380-4760 in the RC 48.

The thing that probably is going to be much more important though is what type of activated carbon the manufacturer is using. It looks like there are 3 different types of activated carbon commonly used:

  • mineral (coal)
  • coconut fibers
  • wood based (peat)

Activated carbon from coconut fibers is supposed to have more/larger surface area than coal-based carbon, but it has a higher ash content than coal based (which I've found conflicting information on how much ash content reduces efficiency.) The other major thing I read about coconut based carbon is that 85-90% of the surface area is micro-pores, which is not necessarily the only thing you want when trying to filter out a wide range of VOC's produced by your flowering cannabis.

Micro-pores < 1 nm in size
Meso-pores 1-25 nm in size
Macro-pores > 25 nm in size

Macro pores are essentially access points to micro pore. If your surface area is primarily micro pores, you have no access point for larger VOC particle sizes to essentially get trapped into through adsorption.

Wood based carbon is supposed to be mostly meso and macro pores.

Coal based carbon is the best mix of all micro/meso/macro pores (which is probably why it's one of the "best touted" choice of most carbon scrubber vendors.)

About the ash content, some of the information I've read (and I see a lot of vendors use it in their ads) is that the ash content (which is usually a percentage, like 13% ash content in RC 412 carbon,) is directly related to the efficiency of the carbon over-all. So 13% ash content would make the carbon used no more than 87% effective (period.) Another reason why it seems like that would be a good reason to use coal based carbon vs coconut in terms of efficiency (most coconut based carbons average around 20% ash, or 80% efficiency.) BUT, then you have the "eco" side of it (if that floats your banana boat,) where you're basically firing coal vs coconuts (which are probably arguably much more renewable.) Then I read some other reports that the natural (emphasis on natural) ash content produced in the process doesn't effect the efficiency; only if it's ash produced by a re-firing or regeneration process (which would make it non-virgin then, I'm pretty sure.) So not quite sure what is what there; can see how claiming ash is much more important than it atually is could be a marketing trick too.

Then there are things like appropriate amount of contact time; temperatures and humidity (high humidity renders scrubbers less effective, high heat generally releases more terpenoids (volatile compounds, etc etc.)

So I'm not totally sure how much of a difference RC 412 vs RC 48 really is if the source material is both coal based carbon of the same quality/grade. My first thought that is that the wider range of micron size could be a blessing or curse as that could potentially filter out more of OTHER things in the air as well, diminishing the life of the scrubber. On the flip side, by going with the smaller range, you could be missing out on a range of particle sizes that could stink. I mean, look how many terpenes/terpenoids cannabis produces. Stiiiiiinky. In either case; it's a good idea to keep the air quality of the tent and surrounding area as clean as possible so the filter is working more on filtering cannabis smells and less on your dirty gym socks, cigarettes smoke, cannabis smoke, etc etc.

Anyways, like I said, this is just part of my note-taking for the night; have some data checking to do.

But, that's some work for another day, class :Hookah: :grin:
 
Now consider this for a moment . One of the things you hope to accomplish when you exercise is to get a good cardio workout . Right . Well as you know when you vap a bowlful or two the heart rate picks up so you get a cardio workout and you don't have to move a fucking muscle .Eh Eh :pighug:
 
Good afternoon live stoners, i have a question.

I'm not good with understanding politics, all i know is they are the nicest people on earth who've done nothing but bend over backwards to help everyone. :)

Maryland representatives are having a meeting as we speak which started at 1 o'clock to discuss a Bill called "marijuana control and revenue act of 2015"

The bill calls for ppl 21 and older to posses up to one ounce, grow 6 plants ect ect....here's my question: What is the purpose of this meeting?

Is it to change the law this year or to try and get this on 2016 ballot? If someone could look into this for me i would greatly appreciate it, like a big max slap in the face full of rep kind of appreciation
 
growbeast said:
Good afternoon live stoners, i have a question.

I'm not good with understanding politics, all i know is they are the nicest people on earth who've done nothing but bend over backwards to help everyone. :)

Maryland representatives are having a meeting as we speak which started at 1 o'clock to discuss a Bill called "marijuana control and revenue act of 2015"

The bill calls for ppl 21 and older to posses up to one ounce, grow 6 plants ect ect....here's my question: What is the purpose of this meeting?

Is it to change the law this year or to try and get this on 2016 ballot? If someone could look into this for me i would greatly appreciate it, like a big max slap in the face full of rep kind of appreciation
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From what I understand its too ASD i
growbeast said:
Good afternoon live stoners, i have a question.

I'm not good with understanding politics, all i know is they are the nicest people on earth who've done nothing but bend over backwards to help everyone. :)

Maryland representatives are having a meeting as we speak which started at 1 o'clock to discuss a Bill called "marijuana control and revenue act of 2015"

The bill calls for ppl 21 and older to posses up to one ounce, grow 6 plants ect ect....here's my question: What is the purpose of this meeting?

Is it to change the law this year or to try and get this on 2016 ballot? If someone could look into this for me i would greatly appreciate it, like a big max slap in the face full of rep kind of appreciation
Click to expand...
From what I understand its a bill that's trying to passed that will regulate and tax marijuana kinda like Colorado
http://www.thedailychronic.net/2015...-hold-marijuana-legalization-hearing-tuesday/
 
So basically it won't be no time soon? Im not finding anything on when this would go into effect
 
Not this year as far as I know Growbeast. I talked to a friend who is in the house and he stated 2016 for popular vote but this all depends on the lawsuits currently in place against Colorado was his answer to me..
 
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Two tents 10 plants . It's a jungle in there . I need a machete just to water them . "pher Wiggle"
 
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