Technical data

93
Chewing Gum Tester DRT
Test equipment to masticate chewing gums,
especially medicated ones for the in vitro re-
lease of substances from the samples into a
surrounding liquid medium.
Up and down strokes (vertical) of the lower jaw
in combination with a revolving movement of
the upper jaw which provides mastication of the
chewing gum and at the same time an agitation
of the test medium.
For manual sampling, emptying and cleaning
process the lower jaw with the test cell can be
lowered into the down position and the chewing
process stops. The test cell, the upper and
lower jaw can be easily removed.
The temperature of the water in the test cell
around the media will be controlled by a water
circulation system.
 1 (DRT 1) or 6 test stations (DRT 6)
 Revolving device for upper jaw:
- Pneumatic drive unit, compressed air 6-8
bar, compressed air to be supplied by cus-
tomer
- The angle of the revolving movement can
be adjusted between 10° – 180°
 Test Cell: Double-walled and made of
glass which allows visual inspection during
the test
- Volume for dissolution medium 20-70 ml
- Temperature controlled by a water circula-
tion system
- In- and outlet nozzle for the water circula-
tion system, Test Cell can be easily re-
moved for cleaning or changing.
Upper jaw: Revolving according to the re-
volving device, no up and down move-
ments
- Mounted on a heat insulated holder
- Can be easily removed for cleaning or
changing (recommended after each test)
- Distance of upper and lower jaw in closed
position adjustable between 0-10 mm
- Acid proofed stainless steel with blasted
surface for a better grip
 Lower jaw: Lifting according to the device
for up and down movements
- No sliding of the sample during mastication
due to the design of the jaw and due to
separate nets between the jaws
- Metal in contact with lower jaw tempered
by the circulated water
- Acid proofed stainless steel with blasted
surface for a better grip
- Can be easily removed for cleaning or
changing. We recommend cleaning or
changing the jaw after each test run
 Device for movements: Vertical pneumatic
cylinder, compressed air 6-8 bar, com-
pressed air supplied by the customer*
- Movement frequency adjustable between
20 - 60 cycles per minute
 Temperature controlled water bath can be
regulated between 25 – 45 °C.
- One water bath for up to 6 test cells, vol-
ume 25 litres, made of PMMA acrylic
glass.
- Electronic pump for continuous circulation
of the heated water.
 Mobile carrier for easy transport of the
whole equipment. Two level carrier with
rubber wheels. Made of aluminium
 Electronic control of each test cell individu-
ally
 Control of movement frequencies, opera-
tion time, temperature and warming up pe-
riod, no product memory, parallel and se-
rial interface available currently
 Power 230 VAC, 50/60Hz, 1000 VA (W)
Special models with logging of pressure,
torque, pH and temperature are available.
Customized models equipped for extra hard
gums or with extended volume for sparingly
soluble substances etc are available on re-
quest.
.