The micro controller based Tap Density Tester ETD-1020
complies with USP and ASTM specifications. The unit offers
a simple and standard means of measuring the tapped density
of powders, granules, pellets, flakes and other bulk sub-
The ETD-1020 is a two station tap density tester supporting
both USP I and USP II methods of testing. The unit allows
anyone test to be performed at a time. The test can also
be performed as per ASTM standards using the optional adapter
for cylinder holders. Two different cylinder holders with
snap - lock mechanism are designed to hold the 100 ml and
250 ml cylinders.
To ensure a free drop of the cylinder from the required
height, the two stations are provided with virtually friction-free
bearings. Each station is directly driven by independent
motors to ensure a maintenance-free drive. A simultaneous
rotating and tapping motion minimises any possible separation
of the mass during tapping down.
The test can be performed in two different modes USP mode
and USER mode in both test methods. In USP mode, test will
run in selected method with set number of taps. At the end
of the test, results like Tapped Density, Compressibility
Index and Hausner Ratio are calculated and displayed.
A validation report can be printed at the end of the test
as per GMP/GLP requirements which includes the test parameters,
test results and actual time and date on which the test
was performed. It also includes serial number of the instrument
along with the entry fields for user name and product details.
In User mode the number of drops can be line and displayed
by the instrument programmed from 1 to 9999. The test can
be performed in either of the methods i.e. USP I or USP
During the test the user is guided through lows the user
to complete the remaining a series of prompts on the LCD
The on-line menus and status indicators and product details.
make the operation of the instrument user friendly. The
drops / minute is validated on-line and displayed by the
The value once programmed is retained in memory of the
instrument. The unit has a power failure detection facility
which allows the user test after the power supply is resumed.