Figure 33. Fused-Silica Sample Tube Inserted Through The Front Of The Esi Probe - Thermo Scientific LTQ Series Hardware Manual

5
Maintenance
Ion Source Probe Maintenance
64 LTQ Series Hardware Manual
Table 8. Parts for a fused-silica sample tube (Sheet 2 of 2)
Image Description
– Safety sleeve, natural PEEK tubing,
230 μm ID, 610 μm OD, 25.4 cm long
(0.009 in. ID, 0.024 in. OD, 10 in. long)
– Tubing, fused-silica, 100 μm ID, 193 μm OD
(0.003 in. ID, 0.008 in. OD)
– Tubing, red PEEK, 127 μm ID, 1/16 in. OD
(0.005 in. ID, 1.6 mm OD)
To install the fused-silica sample tube, thread the sample tube through the ESI needle that
protrudes from the ESI probe nozzle and the safety sleeve. Because you must thread the
tubing through these small orifices, you might find a magnifying device useful.
 To install the new sample tube and PEEK safety sleeve
1. Using the fused-silica cutting tool, cut approximately 38 cm (15 in.) of fused-silica
tubing, and then under magnification check that the end is cut squarely.
The piece of sample tubing must be long enough to extend through the ESI probe and
the natural PEEK safety sleeve.
2. Remove the sample inlet adapter from the ESI probe sample inlet.
3. Insert the sample tube through the ESI needle that protrudes from the front of the
ESI nozzle, and then push it through the ESI probe until approximately 3.5 cm (1.5 in.)
protrudes past the front of the probe.
The remaining length of the sample tube protrudes from the ESI probe sample inlet at
the back of the probe

Figure 33. Fused-silica sample tube inserted through the front of the ESI probe

(Figure 33).
ESI needle
Fused-silica sample tube
Part number
00301-22806
00106-10499
00301-22912
Thermo Scientific