Doulton Ultra Sterasyl Filter with a wide variety of

with a wide variety of shapes and sizes from the microcrystal

The combination of a microfilter ceramic outer

with their often-stunning large crystals forming canopies of coloured snowflakes over the glaze surface

enhanced organics

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

Doulton Ultra Sterasyl Filter with a wide variety ofLink 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