CAMAG ADC 2, Руководство пользователя

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ADC 2
1.1. Relative humidity above saturated salt solutions:
relative humidity [%]
at a temperature of ...°C
Salt
10 15 20 25 30 35 40
Solubility at
20°C
2)
[g / 100 g H
2
O]
Magnesium chloride 33 33 33 33 33 33 33 54,4
Potassium thiocyanate
1)
47 222,5
Sodium chloride 76 75 75 75 75 75 75 36,0
Table 1: If not stated differently the values are from: CRC Handbook of Chemistry
and Physics 1995 by CRC Press.
1) Values from Römpp Lexikon Chemie (9. Aufl.).
2) The solubility values are from: Küster, Friedrich W.: Rechentafeln für die chemi-
sche Analytik. Berlin, New York: de Gruyter, 103. bearb. Aufl., 1985.
Remarks:
It should be added that heating air of 75% relative humidity from
20 to 21°C reduces the relative humidity by 5% down to 70%. A
constant temperature is thus necessary for reaching optimal
humidity constancy. The salt solution should in any case have
the same temperature as the ADC2, which, especially with re-
cently manufactured salt solutions is generally not immediately
the case.
Manual, August 2005 Page 33
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