This Information Applies To: Agilent ICP-MS 7700, 7800, 7850, 7900, 8800, and 8900 systems
Peristaltic pump tubing that has lost its elasticity will not deliver the sample to the nebulizer correctly. When the pump tubing appears limp or flattened or does not require stretching to fit over the pump rollers, it should be replaced with new pump tubing.
Agilent pump tubing, PVC tubing and connector barb sizes vary with application. Some sized tubing will not require a connector barb. Always ensure that the drain tubing has a greater internal diameter than the sample tubing.
To reduce the dead volume and maximize sample throughput, cut and remove excess pump and PVC tubing. Leave at least 10 mm outside the tags on ends of the pump tubing.
Use the Agilent tubing cutter (p/n 8710-1930) for a clean cut with no damage to the tubing end. Damage may cause flow rate problems.
Figure 1. Peristaltic Pump Components
1. Sample uptake tubing, 2. Internal standard uptake tubing, 3. Waste uptake tubing for drain, 4. Knob to adjust the clamp tension, 5. Clamps, 6. Spray chamber drain tubing, 7. To nebulizer, 8. To drain vessel.
Warning: The peristaltic pump has moving parts that can damage hands or fingers caught underneath the clamps during operation. Keep hands away from the peristaltic pump while it is rotating.
Steps to Follow
1. Installing the drain tubing
Figure 2. Installing the drain tubing
2. Installing the internal standard tubing
Figure 3. Installing the internal standard tubing
3. Installing the sample tubing
Figure 4. Installing the sample tubing
4. Adjusting the clamp tension
Figure 5. Adjusting the clamp tension
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Agilent 7800/7850/7900 ICP-MS with MassHunter eLearning path available from Agilent education