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| Digesters with increases of temperature
Instruments for wet digestions of liquid or solid samples
projected according to G.L.P. Good Laboratory
Practise.
The range from room temperature to 450¡ãC is able to
satisfy all the requirements for standard and Kjeldahl
digestions.
The analysed sample is up to 15 ml for liquid or 5 g
for solids. The digestion time varies according to the treated
material and to the used methods.
The Velp digesters allow a work
in reproducible conditions, with a full safety, saving chemicals,
work and space in comparison to the traditional methods.
It is
possible to remove the evolved fumes using specific accessories
without the use of a fume hood.
The structure of the digesters is
manufactured from stainless steel and is protected by a special
resin and paints giving a high resistance to chemicals and
mechanical corrosion.
The heating block holding the test tubes
allows an optimal distribution of heat al all the selected
temperatures.
Its location within the instrument avoids that in
case of liquid spillages these will reach and damage Internal
parts.
The temperature of the heating block is controlled by
dedicated electronics with a microprocessor. The temperature probe
does not require a calibration which is performed by the electronics
at each turning up. This allow a very good precision and
repeatability of tests. It is possible to upgrade the software of
new version by using a personal computer for the innovative
electronics with microprocessor.
It is possible to select up to
20 work programs. For each work program it is possible to
select up to four temperatures with the corresponding durations.
According to GLP (Good Laboratory Practise) it is possible to
send the data related to a performed test to a printer or to a
personal computer for their storage.
Important
In digestions evolving fumes, acid gases
and corrosive (eg. Kjeldahl) we suggest the use of Velp systems for
sucking and neutralizing them:
Recirculating water jet pump type
JP code 10.0198
Scrubber type SMS code 10.0199
Suitable for
AOAC, EPA, DIN, ISO
Specifications | |
|
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| Instruments |
Volts |
Hertz |
|
Code |
| DK
20 |
220-240 |
50-60 |
|
F30100184 |
| Different
power supply on request | |
|
| Complementary parts |
DK
20 |
| Test tubes
Ø 42x300 mm |
A00001080* |
| Glassware
handle with heat shields |
A00001112 |
| Suction
cap |
A00001093 |
| Support
system |
A00001204 | |
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|
A00001080 |
|
A00001112 |
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A00001093 |
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| Upon
request accessories |
DK
20 |
| Stainless
steel drop collector |
A00001202 |
| Stainless
steel stand for glassware handle |
A00001094 |
| Printer |
A00001009 | |
|
| Display:
Lighted LCD 2 lines (16x2) |
| Selection
of language |
5
selectable languages: I, UK, F, E, D |
| Selection
of measure |
¡ãC o
¡ãF |
| Calibration
of temperature |
automatic by software |
| Interface |
serialel RS232 |
| Selectable
programs |
20 with four ramp for each program |
| Selectable
temperatures |
from room temperature ¡Â 450¡ãC
51 ¡Â 842¡ãF |
| Selectable
durations |
from 001 to 999 min. |
| Selection
of time |
1
minute |
| Continuous
operation |
possible |
| Diameter
and number of holes |
Ø 42 mm -
20 holes |
| Power |
2100
W |
| Weight |
24
kg | |
 |
|
|
  |
|
|
A00001202 |
A00001094 |
A00001009 |
|
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| Upon
request accessories for COD |
DK
20 |
| COD test
tubes Ø 42x200 mm, 200 ml, 29/32 cone |
A00001040* |
| Air
refrigerants with grined cone |
A00001041* |
| Teflon
sheets for 29/32 cones |
A00001042* |
| Antisplash
bells |
A00001045 |
| Stainless
steel handle for COD |
A00001098 |
| Supporting
base |
A00001094 |
| * code
number refers to one piece | |
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A00001042 |
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| Performances |
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| Speed of
heating from 20 to 420¡ãC |
30
minutes |
| Stability
of heating block temperature |
¡À0.5¡ãC |
|
Omogeneit¨¤ della temperatura blocco porta
provette |
¡À0.5¡ãC |
|
Precisione della temperatura del blocco porta
provette |
¡À0.5¡ãC | |
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A00001040 |
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A00001041 |
|
A00001045 |
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| Safety |
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|
A00001098 |
|
A00001094 |
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| Against
over temperature |
thermostat |
| Damaged
temperature probe |
thermostat
by software shown on the display | |
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| 152 |
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393 |
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446 |
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