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Different RH at different temperatures

2004

Hi,

I'd like to know what kind of salt I should use for different kinds of temperature variations? I want to create RH=0%, 50% and 100% at 5 °C, RH=0%, 100% at 25 °C and finally RH=0%, 50% at 45 °C. (At 45 degrees I'll use water in a closed container under my sample, is that possible for 25 degrees too?) Thank you!

Best regards,

Marina Nordberg
student writing my theses - Gothenburg, Sweden

2004

Dear Marina,

The best way is to add different quantities of ammonium chloride to reduce temperature and sodium hydroxide to increase temperature of water.

Regards,

Dinesh
- Chennai, Tamilnadu, India

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