| Kieselguhr, a fine powder of diatomaceous earth, can be introduced into the beer and circulated through screens to form a filtration bed. |
| Generally a small percentage of the kieselguhr is replaced by a mixture containing sodium and ammonium carbonates, talc and ochre. |
| Kieselguhr, kaolin, fumed silica are all functional fine particles used as matting agents. |
| Conventional beer filters are made of either densely packed fibres or a dusty material called kieselguhr, which consists of fossilised hard-walled algae called diatoms. |
| For every 1,000 tonnes of beer produced, up to 173 tonnes of solid waste may be created in the form of spent grain, trub from wort production, waste yeast and kieselguhr. |
| Kieselguhr, as it was called, absorbed three times its weight in nitroglycerine and turned the volatile chemical into a much more stable commodity. |
