The cut shows the filter provided with a portion of its bags and frames.
Let it stand, five or six months; then filter it, and bottle it for use.
Put some quicklime and red orpiment in water, place some warm ashes under it for a whole day, filter the liquor, and cork it down.
The water also was filtered through a filter of the mechanical type.
From above a filter of sunlight fell and told her it was noon.
The whole is then well stirred, collected on a filter, drained, and dried.
Mix these: let them stand some hours; and filter before use.
A more effective type of filter is the Chamberlain-Pasteur filter.
The flow from the Berkefeld filter is more rapid than from the Pasteur.
After letting stand 30 minutes, filter and then titrate 50 cc.