Doulton Ultra Sterasyl Filter The most extreme variation is

The most extreme variation is in the nickel crystal

from a pot almost totally covered in crystals to one with sparse crystals

granular activated carbon and heavy metal removal media effectively reduces a range of different contaminants including sediments

This is our locally sourced wild clay

The Crystalline Glazes

Doulton Ultra Sterasyl Filter The most extreme variation isLink to fact sheet here. DOULTON ULTRA STERASYL (does not remove fluoride) The 9 month or 2000 litre super sterasyl filter manufactured by Fairey Industries in the UK (Doulton) is far and the way the best gravity filter manufactured anywhere. With its Absolute filtration rating (defined as >99. 99%) of 0. 9 microns, this filter is highly effective against particulate contamination, pathogenic bacteria, cysts, giardia, cryptosporidium as well as