Key points are not available for this paper at this time.
SUMMARY: Equipment for the automatic control of pH value in cultures of micro-organisms is described. The apparatus was designed for a 2 l. scale continuous culture apparatus. The equipment will continuously control pH value with an accuracy of ± 0·05 unit for periods of many hundred hours. The pH value may be changed at will by turning a knob on the controller. It is sufficient to check the pH meter standardization once every day or two. The main components of the apparatus are standard commercial products.
CALLOW et al. (Sun,) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: