BAIRD dcTATLOCK (LONDON) LTD. 



712 



710 



711 



714 



710 s Pake's Pressure and Vacuum Filter, for u=e with porous candle, vessel containing 2 J litres, 



with pressure gauge and force pump . . . . . . . . . . each 4 5 



(See description, Public Health Journal for March, 1900, page 423). 



711 T Dr. Lazarus-Barlow's High Pressure Filter, designed for more rapid Filtration of Albuminous 

 and other Colloidal solutions, as used at Cancer Research Laboratories, Middlesex Hospital. The 

 filter is designed for filtering small quantities of liquid through special filter blocks or candles, under 

 pressures up to 100 atmospheres. Price, complete with spare filter and disc . . each 36 



The above apparatus as shown, consists of a massive cylinder of special bronze, to which is fitted a plunger 

 or piston actuated by steel screw and hand wheel. The screw is bored and fitted with a valve, operated by small 

 hand wheel shown above large wheel, this valve being provided for the purpose of allowing of the escape of air 

 from cylinder. The screw mechanism is attached to upper flange of cylinder, by means of three steel upright 

 supports. An inlet valve is fitted to lower part of cylinder, the upper portion of valve being provided with 

 glass funnel and rubber tube, supported by small bracket. A pressure gauge is fitted, reading to 150 atmo- 

 spheres (j ton per sq. inch). 



The lower cover of cylinder is removable, and attached to cylinder by steel studs and nuts, and to the 

 upper surface of this plate is secured the filtering medium, made of a special porous substance in the form ol 

 either a hollow candle with flange, or flat disc, both being easily attached and detached. The apparatus is 

 nickel-plated throughout, and fixed to wall by means of a substantial iron casting. 



712 Dialysers, glass, Graham's, with gutta-percha rings. A. Diameter, 4 in. . . each 3 



B. Diameter, 7 in. . . 4 



713 Sausage Skin Dialysers, of parchment, in i metre lengths. 



Width when flat . . . . . . 50 55 70 mm. 



Price per length . . . . . . 3d. 3d. 4d. 



714 Dialysers, open and ground both ends, glass, with tubulure in middle. 



Diameter . . . . . . . . 4 8 10 12 cm. 



Price each .. .. .. .. I/- 1/3 1/6 1/9 





CROSS STREET HATTCTN GARDETST, E- C 



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