ISO 483:1988 PDF

Establishes guidelines for construction and use of enclosures with volumes less than 200 cubicdecimetre in order to obtain atmospheres of constant relative humidity at given temperatures. It specifies the procedures to be followed to maintain the relative humidities of conditioning and testing atmospheres using saturated aqueous salt solutions, glycerol/water solutions or sulfuric acid/water solutions. The guidelines described do not apply to enclosures requiring frequent opening.