5
ITEMS TO BE SUPPLIED BY THE END-USER
Some additional tools may be required to complete the setup of the instrument.
Metal tubing cutter:
A 1/16” metal tubing cutter and deburring tool will be
necessary to cut sections of tubing for making connections between the syringe
pump and RM Synthesizer and connections to the gas cylinders.
Teflon tape
: This may be required when making attaching gas cylinder regulators.
The gas cylinder requirements are outlined below.
N
2
gas cylinder:
Standard nitrogen gas cylinder. High purity is not necessary. For
customers outside of North America a suitable regulator capable of outlet pressures
of at least 120 psi – 150 psi (~8 bar - ~10 bar) is ideal.
CO
2
gas cylinder:
Proper function of the RM Synthesizer requires that CO
2
be
delivered in liquid form. A standard CO
2
gas cylinder will
NOT
work for this purpose.
Many companies can apply 2,000 psi helium head pressure to a cylinder to allow the
CO
2
to exit as a liquid. This requires the tank be equipped with an eductor or siphon
tube so liquid CO
2
will be drawn from the bottom of the tank. High purity is not
required. For customers outside North America a regulator capable of outlet
pressures of at least 1,800 psi (124 bar) is preferred. Lower outlet pressures are
possible, but it should not drop below the liquefaction pressure of CO
2
(~850psi @
RT).
Alkane gas cylinder:
Typically the propane and ethane gas cylinders used with the
RM Synthesizer do not have a regulator attached. The reason for this is the alkane
is generally loaded into the cylinder at or near the liquefaction pressure. So in most
cases the gas is withdrawn at maximum cylinder pressure hence no regulator is
needed. However, it is likely an adapter will be required mate the 1/16” tubing from
the RM Synthesizer to the cylinder outlet. Due to the variance in cylinder types
Daedalus does not attempt to supply suitable adapters. Companies such as High
Pressure Equipment Company (
www.highpressure.com
) can help identify a proper
adapter once the outlet specifications for the particular alkane tank are identified.