The open end of the filter passes into a vessel from which the air is exhausted and filtration takes place from without inward.
The interchange between the fluid outside the vessels and the blood fluid takes place by means of filtration and osmosis.
Maintain this pressure, usually one or one and a half atmospheres, until filtration is completed, by regulating the tap on the entry tube.
After filtration fill the medium into sterile litre flasks with cotton-wool plugs and sterilise in the steamer for twenty minutes on each of three consecutive days.
When the filtration is completed close the tap of the funnel; adjust a screw clamp to the pressure tubing attached to the lateral branch of the filter flask; screw it up tightly, and disconnect the acid wash-bottle.
Even when it has become turbid, if simple filtration is sufficient to render it clear, the filtrate may be used again.
Open the tap of the funnel, and exhaust the air from the filter flask and wash-bottle; maintain the vacuum until the filtration is complete.
This is usually effected by filtration of the water sample through a porcelain filter candle, and the subsequent emulsion of the bacterial residue remaining on the walls of the candle with a small measured quantity of sterile bouillon.
Practically the only method in use in the laboratory for the sterilisation of air or of a gas is by filtration through dry cotton-wool or glass-wool, the fibres of which entangle the micro-organisms and prevent their passage.
It is obvious that to be effective the pores of the filter must be extremely minute, and therefore the rate of filtration will usually be slow.
The folded filter is next placed inside a glass funnel supported on a retort stand, and moistened with hot distilled water before the filtration of the medium is commenced.
After filtration is complete measure the filtrate, and to every 150 c.
One of the ten filter beds of the Columbus water filtration plant with the filtering material removed.
Filtration is a process for rendering fluids sterile by passing them through some material which will hold back the bacteria.
Filtration through paper is again employed, in order to separate this colouring matter, and to the filtered liquid is added an equal amount of alcohol at 95° C.
After filtration through paper, a toxic solution is obtained, which does not deteriorate by keeping, and is neutral to litmus.
They can be partly dissolved again by violent shaking, or they may be separated before use by filtrationthrough sterilised paper.
The site of filtration plant will be mostly in the town of Verdun adjoining the low level pumping station, and will occupy an area of about eighty-five acres.
The immediate results of this operation are satisfactory provided that enough sclerotic be removed to produce a filtration cicatrix.
The intra-ocular tension is probably relieved by the formation of a filtration cicatrix, and it is therefore probable that it may be largely superseded by the operations of cyclo-dialysis and sclerectomy.
Showing its occlusion by the base of the iris, A, being adherent to the posterior surface of the cornea, so preventing filtration of the aqueous into the canal of Schlemm, B.
Through neutralization with lime at boiling temperature and filtration the impurities can almost all be removed after which the glycerine water may be fed to the evaporator.
If a separation should occur another filtration and the slightest possible washing is necessary.
In some cases, especially when the lyes are very dirty and the total residue in the crude glycerine runs high, for which there is a penalty usually attached, a double filtration of the lye is advisable.
This filtration did not happen in Santa Rosa, on account of the quantity of hard copper ore on which the engine is situated.
By this means all the gold chlorides contained in the wet ore may be washed out, a continual stream being passed through it while filtration is going on.
Hitherto, when the ore was very fine or contained slimes, the difficulty of filtration was increased, sometimes in extreme cases to such an extent that chlorination became impracticable.
The process of washing and filtration occupies about an hour, during which time another charge may be in process of treatment in the chlorinator above.
As soon as all the ore has fallen from the chlorinator into the filter, the pump is set going, a partial vacuum is produced in the chamber below the false bottom in the filter, and very rapid filtration results.
Now, by filtration through charcoal everything that is soluble in hydrochloric acid passes away with the water; for instance, lime and magnesia, which before gave such great trouble.
The filtrationplants owned and operated by large cities are usually safe; there is careful supervision of the filters, and frequent and effective cleanings are made.
In many cities the filtration system is so good that private care of the water supply is unnecessary.
It cannot be maintained that this is sea-water freshed by filtration through a few feet or inches of sand, for salt-water cannot be deprived of its salt by that process.
This should be removed, before the oxidation is started, by filtrationwithout suction through a fluted filter.
This, as well as the benzene from the final filtration of the quinone crystals, may be used in a subsequent run and thus raises the yield of the subsequent runs to about 85-90 g.
This arrangement is also well adapted to the filtration of wines, beer, cordials, porter, and various other liquors.
In the common method of filtration no pressure is exerted beyond that of the weight of the column of the liquid resting on the filtering medium, but in some cases additional pressure is employed.
After filtration the whole is mixed with solution of the white of one egg, and 4-1/2 dr.
The treatment with sulphuric acid, filtration and addition of binoxide, is repeated 6 or 7 times.
In some cases the upward and downward systems of filtration are united in the same apparatus, and this plan is advantageous where the space for operating is limited.
Illustration] The filtration of small quantities of liquid, as in chemical experiments, may often be conveniently performed by merely placing the paper on the circular top of a recipient (see engr.
The disinfection of articles of food is accomplished by thorough cooking, boiling in the case of milk, boiling andfiltration in the case of water, and complete roasting, stewing, and frying of meat.
It has also been found convenient to remove yeast cells and kieselguhr from the freshly pressed juice by centrifugalisation instead of by filtration through paper, and to wash the yeast before grinding by means of a filter-press.
This was found in the process of filtration under pressure through a film of gelatin, supported in the pores of a Chamberland filter candle, which had been introduced by Martin [1896].
This view was confirmed by adding to a solution of a completely inactive filtration residue and glucose successive small quantities of boiled juice and observing the volumes of carbon dioxide evolved after each such addition.
In these samples of yeast-juice, therefore, there is present a natural condition of affairs precisely similar to that obtaining in the artificial mixtures of inactive filtration residue and co-enzyme solution made by Harden and Young.
By this means the filtration is quickened by the atmospheric pressure, and goes on very rapidly, as also does the subsequent washing.
The tertiary amine is then distilled off, the residual products separated by filtration and finally hydrolysed by a caustic alkali.
I made the same observation on earth which had laid in ridges two hundred years; below three or four feet it was as dry as dust; from which it is plain that water does not extend so far by filtration as has been generally imagined.
In Europe especially, the system of cleaning milk by filtration through sand, gravel and other substances has been quite extensively used.
Methods of filtration of this character have not been used under commercial conditions here in this country.
The city owns and operates its water-supply system (with an excellent filtration plant installed in 1904) and its gas and electric lighting plants.
The thoroughness of the filtration also was often open to doubt.
The quality of the water supplied by most of the Water Companies after the intakes had been removed to above Teddington Lock, and the filtration thereof before distribution for domestic use had been made compulsory, was considerably improved.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "filtration" in a variety of sentences. We hope that you will now be able to make sentences using this word.
