Two Pieces of Laboratory Apparatus.

Two Pieces by Dewey 1 Running head : TWO PIECES BY DEWEY Reflections on Two Pieces

Calibration of laboratory aeration apparatus.

Aeration of some sort is frequently provided during laboratory cultivation of bacteria. Since metabolic responses and the nature of fermentation products may depend upon the amount of available oxygen (Pirt, 1957), it is important to have some adequate measure of this variable. Finn (1954) has pointed out that gassing rates alone are without significance; it is necessary to determine the rate a...

Laboratory Procedures, Apparatus and Improvizations

In the recent medical literature, there has been an almost uninterrupted flow of papers describing new methods of desiccation, or introducing some modifications in old methods. It is not the purpose of this paper to describe a new method of desiccation, but to stress certain technical details and amplify certain procedures which it is hoped will be found useful in any method finally selected by...

Entangled photon apparatus for the undergraduate laboratory

We present detailed instructions for constructing and operating an apparatus to produce and detect polarization-entangled photons. The source operates by type I spontaneous parametric downconversion in a two-crystal geometry. Photons are detected in coincidence by single-photon counting modules and show strong angular and polarization correlations. We observe more than 100 entangled photon pair...

Laboratory Apparatus to Evaluate Microalgae Production

The application of microalgae for energy purposes and CO2 biomitigation continues to present a number of challenges, including the optimization of culture conditions. The application of experimental designs for microalgae cultivation is difficult, since experiments involving such microorganisms generally last days or weeks. This work proposes a multipurpose laboratory apparatus for the optimiza...