Sper scientific 850069, Инструкция по эксплуатации

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5
The rugged, light-weight and portable design of the
Environmental Quality Meter allows you to use it almost
anywhere to monitor elements and maintain a healthy and
safe environment.
Recommended exposure limits for the various elements
have been set through government organizations such
as the US Occupational Safety and Health Administration
(OSHA) and the National Institute for Occupational Safety
and Health (NIOSH).
Current recommendations and guidelines are available
through these organizations, as well as many others. (Refer
to Environment References page 26.)