Ventilation And Heating
Ventilation And Heating
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238.
Digitized by Google DETERMINATION OF ORGANIC MATTER. I99 the water being determined by the method suggested by Wanklyn and Chapman for water analysis.
Both ot these methods require much time, considerable apparatus, and are, according to Carnelley and Mackie, open to errors of greater or less extent, depending upon ciicumstances.
The method proposed is based upon the reduction of potas- sium permanganate. It differs, however, from Smith's method, particularly in the mode of determining the... amount of reduction.
This consists in determining, cfibrimetrically^ by comparison with a standard, the fractional bleaching effected by a known volume of air.
Method. — The solution of permanganate employed is of ( normaU strength, i c.c. of which = 0.008 mg. of oxygen, the volume of which is, under normal conditions, 0.0000056 litre.
It is usually kept of — strength, and diluted as required for use, about 50 c.c of dilute sulphuric acid (1.6) being added to the weak solution.
For the collection of samples of air large, well -stoppered bottles of about 3.5 litres capacity are used.
What to read after Ventilation And Heating?
You can find similar books in the "Read Also" column, or choose other free books by Billings, John S. (John Shaw), 1838-1913 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
238.
Digitized by Google DETERMINATION OF ORGANIC MATTER. I99 the water being determined by the method suggested by Wanklyn and Chapman for water analysis.
Both ot these methods require much time, considerable apparatus, and are, according to Carnelley and Mackie, open to errors of greater or less extent, depending upon ciicumstances.
The method proposed is based upon the reduction of potas- sium permanganate. It differs, however, from Smith's method, particularly in the mode of determining the... amount of reduction.
This consists in determining, cfibrimetrically^ by comparison with a standard, the fractional bleaching effected by a known volume of air.
Method. — The solution of permanganate employed is of ( normaU strength, i c.c. of which = 0.008 mg. of oxygen, the volume of which is, under normal conditions, 0.0000056 litre.
It is usually kept of — strength, and diluted as required for use, about 50 c.c of dilute sulphuric acid (1.6) being added to the weak solution.
For the collection of samples of air large, well -stoppered bottles of about 3.5 litres capacity are used.
What to read after Ventilation And Heating?
You can find similar books in the "Read Also" column, or choose other free books by Billings, John S. (John Shaw), 1838-1913 to read onlineMoreLess
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