Accessories - BRAND Dispensette TA Operating Manual

Accessories

The following optional original accessories are available for the bottle-
top dispenser Dispensette TA:
®
SafetyPrime ™ recirculation valve
The SafetyPrime ™ recirculation valve (see accessories, page 44)
enables priming of the instrument without loss of medium.
Always use the designated recirculation valve that corresponds to the
instrument model.
For assembly, see "Assembly" on page 30.
Flexible discharge tube
a
For serial dispensing, except for HF, the flexible discharge tube can
be used (Accessories page 43). The specified accuracy and coef-
ficient 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.
For mounting, attach the tube holder onto the valve block
(Fig. a) and mount the receiver tube. Slide the dispensing tube with
the flexible discharge tube approx. 2 mm further on the valve block,
and tighten the lock nut hand-tight. Use a bottle stand (Fig. b).
b
Warning:
The flexible discharge tubing must not be used with HF (hydrofluoric
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 supported 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!
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