Technical data

49
“FAST-14” Kit
The dosing-by-valves “FAST-14” Kit offers best
possible dosing results in combination with the
easy-to-use, budget 16-channel peristaltic
pump in combination with short sampling inter-
vals (from 2 minutes).
The system allows precision sample dosing into
glass tubes (10 ml / 25 ml) or sealed/unsealed
HPLC vials (1.5 ml/4.0 ml), accurate media
replacement as well as HPLC membrane pierc-
ing. The system comprises of:
1.) Fully USP/EP compliant sampling station
with automatic sample withdraw height ad-
justment and 14 stainless steel (316) sam-
ple withdraw tubes
2.) 16-channel peristaltic pump with Verder-
prene tubing
3.) FRL 724-2 14-channel “silent” Autosampler
with 14x 3-way-valves and x/y driven arm
in “corrosion reduced design” for collection
of up to 12 sampling intervals into 10 ml
glass tubes, sealed 1.2/4.0 ml HPLC vials
or 8 sampling intervals into 25 ml glass
tubes as well as support arm to hold a
rack.
4.) Tubing/Connector Kit, Teflon
5.) System pre-configuration
6.) Upgraded DT 1420i series to control the
complete Offline System, incl. alpha-
numeric keypad, graphic LC display and
product memory
Not included: DT 1420 dissolution tester and
collection rack
Operation principle:
The stainless steel (optional Titanium) sample
withdraw tubes are driven into the media (ex-
actly midway between the top of the media and
the top of the rotating Basket or Paddle)
only while the sample is withdrawn – not to
change the hydrodynamic inside the vessel –
as described in the USP and EP.
Optional the sample withdraw system can be
equipped with electronic temperature sensors
for each vessel to archive media temperature
documentation for each test-station.
During the sample withdraw tubes are inside
the media the peristaltic pump pumps the me-
dia in a cycle from the vessel through the Auto-
sampler back to the vessel, until all air inside
the tubing system is removed and the filters are
saturated.
Then 3-way solenoid valves inside the arm of
the FRL 724-2 Autosampler switch and the
required amount of media is collected in either
glass tubes (10/25 ml) or sealed/unsealed
HPLC vials (1.5/4.0 ml) with an accuracy of ±
0.5 ml.
Optionally cooled racks for HPLC vials are
available.
After sample collection the 316 stainless steel
tubes (optionally Titanium) of the Autosampler
drive to and into the replacement media inside
the acrylic glass reservoir which refills after
each media replacement interval automatically
by two integrated 1-channel peristaltic pumps.
The syringes will transfer the desired volume to
the test-stations to keep the media volume
within the USP/EP specified ± 1% limits.
“FAST-14” Offline Kit, 14-channel
16-148-0000
(storage/doses into tubes & HPLC vials, media replacement and HPLC vial mem-
brane piercing)