relative humidity

The Importance of Humidity Control in Archives

The Importance of Humidity Control in Archives

A green New Zealand invariably means a wet New Zealand. Humidity and inappropriate amounts of water vapour constitutes a real threat to the continued preservation as once moisture damage, bacterial growth, corrosion has occurred the object to be preserved will probably never return to its former condition. . Temperature and pollutants are important factors in preserving documents. In general the humidity and temperature have to be as stable as possible and pollutants should be kept to a minimum. 

What is Relative Humidity, Absolute Humidity and Dew Point?

What is Relative Humidity, Absolute Humidity and Dew Point?

Humidity can be measured in several ways: either by relative humidity, absolute humidity or dew point.  But what is the difference? In this post we try to explain the different ways of measuring humidity.