Join Date: Aug 2003
Location: Bangkok, Thailand
The thing to keep in mind is that eco complete, as well as other clay substrate products, are made from natural raw materials mined from the ground which can certainly experience batch-to-batch variations. While the majority may have quite consistent composition, there will be some batches which may contain impurities like carbonates or other substances. It is just simply too costly to QC the materials on that scale. They may take and analyze once every couple tons, but within that batch may also contain slight variations on a smaller scale as well.