PerkinElmer AVIO 500, Customer Hardware And Service Manual

Page: 52 / 355

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Safety Practices
• Attempt to dissolve the sample in a dilute acid solution before using
concentrated acid.
• Add concentrated acid to a sample cautiously. Dissolving a sample in
concentrated acid may provoke a vigorous reaction.
Acid Digestions
Acid digestions, either at atmospheric pressure or at increased pressure, require
special care. Spattering and foaming of the sample/acid mixture may expose the
user to a hazard, as well as compromise the sample integrity. A digested sample
containing concentrated acid will react violently with water.
Perchloric acid and hydrofluoric acid are particularly hazardous to work with.
Perchloric Acid
Perchloric acid (HClO
4
) is extremely corrosive and a powerful oxidizing agent. It
presents severe fire and explosion hazards.
• Use hoods, ducts, and other devices for removing vapors specifically designed
to accommodate this kind of fume. There is a severe explosion hazard if a
normal hood is used, or if the hood is not properly used and maintained.
• Use goggles and face shields. Wear protective clothing and polyvinyl chloride
gloves. Do not use rubber gloves.
• Additional hazards and precautions are given in References 1, 2, 9, 10 and 11.
Before using perchloric acid, you should be thoroughly familiar with
its hazards and safe handling practices.
Observe the manufacturer's
recommendations for use, storage, and disposal.
Avertissement: Avant d'utiliser l'acide perchlorique, vous devriez
être familier avec ses dangers et les pratiques de manipulation
sécuritaires.
Respecter les recommandations du fabricant pour
l'utilisation, le stockage et l'élimination.
!
Warning