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Connecting the tubing, Installation, Single-syringe model – Gilson 402 User Manual

Page 28

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3-4

Installation

3

Connecting the T

ubing

Connecting the Tubing

Tubing connectors should be hand-tightened,

tools should not be used as their use will damage

the connector’s thread.

Single-syringe Model

Valve Inlet Tubing

A length of Fluoride Ethylene Propylene (FEP)

tubing, supplied with the 402, is used to connect

the inlet port to the solvent reservoir. Screw the

connector into the inlet port (left-hand) of the valve

and put the other end into the reservoir. A bottle

clip is provided to hold the tubing securely in the

reservoir (see opposite Figure).
An alternative tubing, fitted with a connector at

one end and a 20 µm filter at the other, is available

as an accessory (reference 3645357).

Waste Tubing

Connect a suitable length of tubing from the waste

outlet of the valve to a suitable receptacle. The valve

releases liquid through the waste outlet if the pressure

inside the valve is too high. For the pressure limits

of the valve, refer to Appendix C, Technical Data.

Transfer Tubing (Probe)

This tubing (FEP) allows the transfer of samples

aspirated from the probe and prevents the contami-

nation of the syringe(s). The size of transfer tubing

is chosen as a function of the volumes of samples,

reagents, and air gaps that have to be handled via

the probe. The total volume transferred must be less

than the volume of the transfer tubing.
The transfer tubing connects the outlet port (right-

hand) of the valve to the probe. A 2 mL tapered

tubing is supplied as standard; 1 mL, 5 mL, and

10 mL are available as additional accessories.
Self-adhesive clips are provided for holding the

transfer tubing securely against the side of the 402.
The 1 mL transfer tubing is recommended for trans-

ferring volumes smaller than 1 mL. To avoid move-

ments of the tubing that could affect the precision,

the 5 mL and 10 mL transfer tubings are rolled and

held by magnets on the left-side of the 402.

From
reservoir

Transfer tubing

to probe

To waste

Valve