PerkinElmer OPTIMA 8000, Customer Hardware And Service Manual

Page: 181 / 285

Maintenance
183
5. To the open end of the tubing coupler (Part No. 09920186) connect the drain
tubing to the peristaltic pump tubing. See the procedure Installing the Drain
Tubing on page 221 later in this chapter for information on connecting the drain
tubing to the drain bottle.
6. After you install the cyclonic spray chamber, install the concentric glass or
GemCone nebulizer. See the procedure, Installing the GemCone Nebulizer on
the Cyclonic Spray Chamber on page 204, later in this chapter. Insert the
nebulizer, as far as it will go, through the O-rings of the spray chamber.
Etching the Cyclonic Spray Chamber
The cyclonic spray chamber can be etched in order to improve drainage using the
following procedure. However, if you will be using the cyclonic spray chamber in
determinations of silicon, this procedure should
not be used.
1. Prepare a 0.5% solution of hydrofluoric acid (HF), observing the precautions
listed below.
2. Ignite the plasma.
3. Aspirate the HF solution for between 1 and a maximum of 2 minutes.
4. At first, you will see beads of water inside the cyclonic spray chamber, then after
approximately 30 seconds, the beads will begin to disappear.
5. Aspirate a rinse solution for several minutes.
Hydrofluoric acid — toxic and corrosive.
Hydrofluoric acid (HF) is toxic, extremely corrosive, and can cause
severe burns. Hydrofluoric acid will readily burn skin, and if the
fumes are inhaled, lung tissue. Burns may not be immediately painful
or visible. Contact with eyes could result in blindness.
• When using hydrofluoric acid, always wear suitable protective
clothing including a face mask, work in a fume hood, and observe the
manufacturer’s instructions and your local safety regulations.
!
Warning