Preparation of Microscopic Glass Spheres

Bloomquist, C. R.; Clark, Allan H.

doi:10.1021/ac50141a025

Cited by 12 publications

(6 citation statements)

References 3 publications

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“…Its geometric area ivas 0.579 m.2 Two samples of glass spheres were used. They were both prepared by the method of Bloomquist and Clark (5). One sample, very kindly furnished by the Battelle Memorial Institute, had been carefully sized and had a particle diameter of 7 microns.…”

Section: Gasesmentioning

confidence: 99%

Adsorption of Gases on Surfaces of Powders and Metal Foils.

Davis¹,

DeWitt²,

Emmett³

1947

J. Phys. Chem.

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Section: Gasesmentioning

confidence: 99%

Adsorption of Gases on Surfaces of Powders and Metal Foils.

Davis¹,

DeWitt²,

Emmett³

1947

J. Phys. Chem.

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“…The microscopic glass spheres used in Figure 14 were made in the Interchemical Research Laboratories by a method similar to the one developed by Bloomquest (1).…”

Section: Resultsmentioning

confidence: 99%

Analysis of Thixotropy of Pigment-Vehicle Suspensions - Basic Principles of the Hysteresis Loop

Green¹,

Weltmann²

1943

Ind. Eng. Chem. Anal. Ed.

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“…Glass Particles.--Finely powdered pyrex glass was suspended in water and ground in a glass mill with steel balls for several hours (11). The particles remaining in suspension after standing for a period of several days, were decanted and treated with hydrochloric acid to remove ferrous material.…”

Section: Methodsmentioning

confidence: 99%

Electrophoretic Studies on Elementary Bodies of Vaccinia

Shedlovsky

Smadel

1940

Journal of Experimental Medicine

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It has been found (1) that suspensions of elementary bodies of vaccinia studied by electrophoresis in the Tiselins apparatus yield moving boundaries which differ from those usually observed. Unlike solutions of ordinary proteins or of two of the plant virus proteins (tobacco mosaic (2) and bushy stunt (3)) which on electrolysis display boundaries that remain quite sharp and fiat, suspensions of the elementary bodies of vaccinia show distortions in the form of a stream of the particles moving ahead from the center of the boundaries in the direction of the electric current. Thus, one observes a stream of the suspended material rising in the center of one leg of the cell and a corresponding stream of the solvent descending in the center of the other leg. Reversal of the current results in the reversal of these effects. Because of the asymmetric nature of this boundary disturbance, simple convection arising from the electrical heat generated cannot account for the phenomenon. McFarlane (1) attributed the effect to endosmosis.It will be shown by data presented in this paper that the type of boundaries observed with vaccine virus can be obtained also with particles of a similar size but of an entirely different nature. Furthermore, the mobility of such boundaries in a given medium depends principally on the nature of the surface of the particles, a fact which has long been known to workers using the microscopic electrophoretic method in which the motion of a single particle is studied (4). In addition, the boundary distortions obtained with suspensions of particles will be shown to be artifacts in that they do not result from any characteristic property of the particles themselves but rather from the absence of density gradients of sufficient magnitude at the boundary. Materials and MethodsElementary Bodies of Vaccinia.--Elementary bodies of vaccinia were prepared according to the method of Craigie (5) which has recently been redescribed at length (6). 40 ce. of a stock suspension of virus obtained from one rabbit contained about 8 rag. of dry material (7); thus, the concentration was approximately 0.2 mg. per cc. or 0.2 per

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Preparation of Microscopic Glass Spheres

Cited by 12 publications

References 3 publications

Adsorption of Gases on Surfaces of Powders and Metal Foils.

Adsorption of Gases on Surfaces of Powders and Metal Foils.

Analysis of Thixotropy of Pigment-Vehicle Suspensions - Basic Principles of the Hysteresis Loop

Electrophoretic Studies on Elementary Bodies of Vaccinia

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