Due to the slow percolation of water through each spherule, anaerobic actions can occur and nitrates are removed. (petbusiness.com)
In the study, the researchers spent two months on snowmobiles in the region collecting seven ice cores from the remote percolation zone of the ice sheet. (rdmag.com)
Rodelle Organic Pure Vanilla Extract is made using the same advanced heat percolation process used for Rodelle Pure Vanilla Extract. (amazon.com)