Methods of air analysis / by J.S. Haldane.

  • John Scott Haldane
Date:
1920
Catalogue details

Licence: In copyright

Credit: Methods of air analysis / by J.S. Haldane. Source: Wellcome Collection.

    146/162 page 128
    sample is then measured off in a very small measuring cylinder and introduced under the water into the bottle, which is then allowed to fill up with air, transferred to a small basin of the blood solution, and the rest of the process carried out in the manner already described. To calculate the dilution, the capacity of the bottle must, of course, be known. The blood solution in the bottle will, of course, be diluted a little by water which adhered to the inside of the bottle; but this does not affect the titration. It is only necessary to tilt the test- tube No. 1 a little in order to make the depth of tint in the contained solution appear equal to that in No. 2 test-tube. No other gas besides carbon monoxide gives the colour reaction with blood solution; and for detecting carbon monoxide this reaction is about five times as delicate as the older spectroscopic test.
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