Corrosives, Solvents, And Pressurized Gases; Pressurized Gases - Thermo Scientific Antaris II Manual

Regulatory and Safety Information
Corrosives,
solvents, and

pressurized gases

Pressurized gases
24 Antaris II and Antaris MX Site and Safety Information
Many standard spectroscopy methods are based on the use of solvents.
Some experiments involve corrosive or pressurized samples in a gaseous
state. All these sample materials can be measured using your instrument,
but special precautions must be taken.
Pressurized gases may be used for instrument purge, sampling and/or
optional cooling devices. The following are general guidelines for the safe
use and storage of compressed gases. Check with your fire, public safety,
and other regulatory authorities for specific requirements for your
location. See the section entitled "Specifications" later in this guide for
specific cryogenic and purge gas requirements.
•
Wear eye protection when working with or near pressurized lines and
cylinders.
•
When handling toxic and hazardous gases, be sure the work area is
properly ventilated through a non-sparking fume hood, glove box, or
ventilated cabinet
•
Leave valve protective caps in place until the cylinder is connected to a
regulator or manifold. Never lift a cylinder by the cap.
•
Always provide a legible label or marking to identify the contents of a
cylinder and any precautionary warnings.
•
Inspect the cylinders regularly for corrosion, valve damage or leaks, and
evidence of tampering. Never use a flame to detect flammable gas leaks.
•
Regulate the flow of gas from the gas source into the instrument so that
the pressure and flow rate never exceed the specifications for the
instrument or cooling device.
Danger Never use a flammable gas to purge an instrument. Heat from the source or
from laser absorption could ignite the gas. The purge gas must be free of
moisture, oil and other reactive materials. Use only clean, dried air or
nitrogen to purge the instrument. Other gases, even inert gases such as
argon (AR), can damage the instrument.
Danger Nitrogen gas (used to purge systems designed with hazardous location
protections) accumulates in the enclosure creating oxygen deficient areas.
Wait at least one minute (for breathable air to enter the enclosure) before
beginning work on internal components.
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