DENTSPLY Extra Star Instructions For Use Manual page 9

3 Investment storage
Most of you are probably aware of the problems which can occur when investment is subjected to varia-
tions in environment temperature (e.g. summer and winter) and the effect this can have on your castings.
That is why it is very important to find the right place to store your supply of investment. The investment
should be stored in a cool and dry place, between +5 °C to +30 °C at 30 % to 90 % relative humidity.
If you have a place in your laboratory where these conditions can be found throughout the year, then
that's the place to store your investment!
If it is not possible for you to store your investment at this temperature, then you should at least make
sure that the work bench where investing is done fits these requirements (use a temperature control
cupboard or similar).
Please note the symbols on product labels:
Product code
5 Batch or lot number
6 Use before
7 Consult instructions for use
Avoid any nasty surprises by observing the following:
– Regularly check the temperature and humidity in the embedding region - application temperature:
+20 °C to +23 °C at 30
– Avoid using any investment that has just been brought out of an especially warm or cold place.
(e.g. storage rooms, silos, cupboards etc.)!
– Fill up stocks at your workbench before your supply runs out. Give the investment time to adjust to
the environment!
– Avoid using investment that has just been delivered to the laboratory. Again, give the investment time
to acquire the right temperature.
– If space allows, stock up on investment (especially LIQUID) before the cold winter months arrive. This
way, you forego the risk of exposing the liquid to frost during delivery
4 Expansion Control
ExtraStar is mixed with ExtraStar liquid. Expansion can be controlled by diluting this liquid with distilled
water, thus achieving an optimal fit for any geometry.
to 90 relative humidity.
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