Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-19
To attach this connector, complete the following steps:
1 The connector block is shown in the following figure.
The connector block (black) is made of an electrically conductive polymer,
which grounds the sample solution to the chassis via a fine Pt wire. The Pt
wire just protrudes through the end of the connector, making contact with
the sample.
Figure 36 Sample Line Connector Block
2 Cut the edge of the Teflon tubing at a 90- degree angle in order to avoid
leaking or clogging.
3 Slide the Teflon nut, back ferrule and front ferrule onto the Teflon
tubing and allow the tubing to protrude 0.5 to 1.0 mm beyond the front
ferrule.
Figure 37 Teflon Nut, Front and Back Ferrule
4 Insert the end of the Teflon tubing into the connector block as far as
possible. Next, slide the Teflon nut and tighten the Teflon nut into the
connector block.
To reduce the dead volume, keep the Teflon tubing pushed in as far as
possible until the connection is finished.
Fixing the tube tightly into the connector makes the dead volume a
minimum. Consequently, the tube tip and the fit tip will be coherent.
Connector Block
Teflon Tubing Teflon Tubing from Nebulizer
Conductive Connector
0.5-1.0 mm
Teflon tubingF ront & Back Ferrule
Teflon Nut
0.5-1.0 mm