. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. METHOD FOR MEASURING CARBON DIOXIDE. 107 the cardboard disk. A drop of phenolphthalein is added through the hole in the cardboard disk and then the Ba(OH)2 is rapidly titrated with a weak solution of HC1 of known and appropriate concentration, say n/ioo. As control a similar bottle is set up in exactly the same way but without the animals. The Ba(OH)2 is titrated at the end of the experiment, that is, at the same time as the free Ba(OH)2 in the experimental bottle. The difference in the amounts of HC1 necessary to neutralize
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. METHOD FOR MEASURING CARBON DIOXIDE. 107 the cardboard disk. A drop of phenolphthalein is added through the hole in the cardboard disk and then the Ba(OH)2 is rapidly titrated with a weak solution of HC1 of known and appropriate concentration, say n/ioo. As control a similar bottle is set up in exactly the same way but without the animals. The Ba(OH)2 is titrated at the end of the experiment, that is, at the same time as the free Ba(OH)2 in the experimental bottle. The difference in the amounts of HC1 necessary to neutralize the remaining free base in the bottles is equivalent to the quantity of CO2 pro-. FlG. 2. duced by the organisms during the period of the experiment. This description explains in brief the principle and procedure of the method, but the following sources of variation and error suggest themselves and will be considered in the same order as follows: I. Temporary exposure to the CO2 in the air of the open bottle containing the Ba(OH)2 may result in absorption of varying amounts of CO2 in different individual bottles. This variation. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
