repackaged Calgon Carbon
That Curt or a Norit or Chinese GAC
and there is virtually no dust
Dust does not define how good a GAC is or isn't that is a myth. Dust is a function of hardness. If that was the case then CC is better.
Most carbons don't list their physical properties.
True and I wish they did.
The only way you can truly compare one carbon to another is to evaluate pore capacity, wettability, surface area, and apparent density.
That is nonsense who told you that ? Or maybe I should agree but you do not understand what you just typed. For if so, you would not have picked this carbon. Don't get me wrog, I'm not saying this is a bad GAC, it is a nice choice, it is just not the best choice.
I can assure you that it is above the bar in terms of quality
I will not dispute that. However, there are other GAC's sold in this hobby that are better than yours.
This is a product that has not been distributed in the Aquarium industry to date.
That does not mean anything.
It has 5% moisture, that is allot for a Bitum. Most good GAC Bitum are 3% or less.
All of the physical characteristics of the Carbon are printed directly on the label
No they are not. Where is the Molasses #, Ash % ( and both kinds), mean pore diameter and yielded pH product ? These are on any good GAC data sheet. And your GAC is not acid washed. So your GAC ranks about # 5 on my list of GAC's sold in this hobby by aquarium companies. That is not to bad. So, you have just beat out 2 of the top 7.
Of course you are correct that bituminous coal based carbon is more efficient because of it's higher pore capacity
Yes, but Peat anmd Lignite are even more so.
And yes Jt it is a fair price