Question 1

What country does it come from??

Accepted Answer

Persist Biochar is made 100% from California pistachio shells here in the United States. The manufacturing company is VGRID Energy Systems which uses their bioserver technology to convert AG waste pistachio shells into clean energy and they extract Persist Biochar from the process. The bioserver uses a high Temp/low gasification process to ensure the biochar is pure and has a very high porosity value for maximum adsorption capacity.

Question 2

How many quarts is this (1.5 cu. ft) equivalent to?

Accepted Answer

The formula for finding out how many quarts is in 1.5 cuft is: to multiply the volume value by 29.922078. So the answer to your question would be 44.8831169 quarts

Question 3

Is this good for clay soil?

Accepted Answer

Horticultural charcoal is good for just about any soil and clay is no different.  This will be a great additive for clay soil.  I live in a clay-heavy area of New England and this has worked great in my garden and overall yard plantings (not to mention potted plant soil). On this issue though, I will say if you do have a substantial majority of clay soil and the amount of topsoil that would be needed to noticably/fully improve it would be unrealistically cost prohibitive, a spring and summer of garden gypsum is absolutely critical to aid in creating a suitably draining soil.  Mix that with the charcoal and you'll see a marked improvement.  Good luck!

Question 4

horti charcoal for plants & active carbon bricks purify horse's water troughs—similar benefits but active carbon is better; does this work the same?

Accepted Answer

Charcoal/carbon is classified on a range or spectrum. From the charcoal you get from a campfire to pharmaceutical active carbon. The latter is used to filter water and air for purification purposes, though many DYIs survivalists and such show how you can use the low-grade charcoal when additional precautions are made. Persist Biochar is made using a low oxygen high-temperature process which creates a very high surface area and would be considered a low-grade active carbon. In saying that, Persist Biochar is not approved or tested to purify drinking water for animals or people.

ASIN	B0912PPSL9
Brand Name	PERSIST
Customer Reviews	4.7 4.7 out of 5 stars (484)
Global Trade Identification Number	00850011223000
Item Weight	2 pounds
Manufacturer	VGRID Energy Systems
Manufacturer Part Number	00850011223000
Model Number	850011223000
Style Name	Modern
UPC	850011223000
Unit Count	32 Count
Volume	3 quarts

Persist Horticultural Charcoal 3qt Bag, Biochar Soil Amendment for Indoor Plants, Improves Soil for Terrariums, 100% Natural Active Carbon and House Plant Enhancer.

Details

Details

Description

Specifications

Common Questions