Technical data

82
ERWEKA DFZ 720
Flow-Through-Cell with 7 stations
according to USP apparatus 4
The ERWEKA DFZ Dissolution Testers offer
the typical advantages of USP apparatus 4 but
eliminate the typical disadvantages.
ERWEKA designed a new valve-free pump with
automatic deaeration and volume adjustment.
 DHC 2000i – flow heater with 2 temp. sen-
sors, 1x internal and 1x external for the
water bath
 Water distribution system
 One three-way valve for control of the wa-
ter flow
 Plastic support plate for the cells
 Deep drawn tray water bath + metal hous-
ing incl. view window
 Immersion thermometer for control of the
temperature in the water bath
 “Quick-Screw” closing system for the cells
 Teflon tubing 1.6 mm or 3.0 mm o.d.
7 Cell type with immersion thermometer to
control the temperature in the water bath
7 cell type,
excluding cells
230V/50Hz 13-012-0001
230V/60Hz 13-012-0002
115V/60Hz 13-012-0003
127V/60Hz 13-012-0004
The DFZ is without cells. The cells can be
selected under options
ERWEKA USP apparatus 4
Pump, HKP 720
The valve-free ERWEKA Piston Pump HKP 720
is specially designed for the use with USP ap-
paratus 4 Flow-Through-Cell. In standard con-
figuration it offers a flow rate from 2.0 ml to 32.0
ml at 120 strokes/minute and an accuracy of
5%. Unlike other USP 4 pumps the HKP 720
offers automated deaeration at the start of the
operation.
The required flow rate is just pre-set by the
integrated menu and the HKP 720 will adjust
the requested flow rate by itself.
There are no valves incorporated in the HKP
720 to eliminate the problems of particles stick-
ing.
 7-channels
 Valve-free design
 Automatic deaeration of the pump heads
 Pump heads made of Teflon and ceramics
 High Accuracy (5 %)
 Automatic flow rate adjustment
 Parallel printer interface for documentation
of strokes/min.
 Serial RS 232 interface for external control
 Teflon tubing
Flow rate from 2.0 to 32.0 ml/min at 120
strokes/min., Teflon tubing 1.6 mm o.d.
100-240V/50-60Hz 10-312-1200
Spare Part Kit for HKP 720 90-312-xx00
Dissolution Tester (USP apparatus 4)