Accessories - VITLAB Dispenser TA2 Mode D'emploi

8. Accessories

The following optional original accessories are available for the bottle-
top dispenser VITLAB
®
8.1 Flexible discharge tube
For serial dispensing, except for HF, the flexible discharge tube can be
used ('Accessories', page 45). The specified accuracy and coefficient of
variation of the instrument are only obtained for volumes > 2 ml and
by gently approaching the upper and lower stops.
The coil of the tubing can be stretched to a length of the 800 mm
max. Before use ensure, that the entire coil lies in regular loops and is
not twisted.
1. If the VITLAB Dispenser TA
®
must be cleaned before mounting the flexible discharge tube (page
45).
2. Instruments with a recirculating valve should be set to 'Recircu-
late', and the valve lever pulled upwards to remove it.
3. Slide the discharge tube housing all the way up. Then pull dis-
charge tube forward with gentle up and down motions (Fig. 1).
4. Push the flexible discharge tube holder from the bottom of the
valve block (Fig. 2) and tighten it. For this, VITLAB
must not be mounted on the bottle. Install the receiver tube.
5. Press the cock plug of the recirculation valve downwards.
6. Slide the flexible discharge tube housing into the valve block up to
the stop (Fig. 3).
7. Slide the discharge tube housing all the way down (Fig. 4).
8. Attach the valve lever and press it in firmly.
Note:
Always follow the instructions for valve marking on page 32!
Use a bottle stand ('Accessories', page 47).
Warning!
The flexible discharge tubing must not be used with HF (hydroflu-
oric acid).
There should be no visible damage to the discharge tube (e.g.
kinks or the like). Each time you are going to use the tubing,
examine it carefully! To dispense aggressive liquids, you should
take safety measures in addition to the normal precautions. We
recommend use of a protective shield. The bottle must be sup-
ported using a bottle stand. To help avoid reagent splashing from
the tube, always grip the tube firmly by the handle and replace
into the holder after use. For cleaning rinse the tube carefully. Do
not dismantle!
36
Dispenser TA :
2
was already in use, the instrument
2
Dispenser TA
® 2
1
2
3
4