Brookfield CT3 Texture Analyzer - Manual (Page 22)

Brookfield Engineering Labs., Inc. Page 22 Manual No. M08-372-C0113
NOTE: It is not recommended to conduct bloom testing with load cells greater than 1500g.
On instruments with load cells 10kg or higher, the bloom test will not appear on the
menu.
TPA TEST
– performs two compression cycles on the sample and reports five established Texture
Profile Analysis results.
The operator sets the trigger value, target deformation (travel distance into the sample) and the test
speed using the TPA menu screen:
TEST:TPA
TRIGGER: XXX.X g
DEFORMATION: XXX.X mm
SPEED: XX.X mm/s
III.18
The operator depresses the start button to begin the test. In a TPA test the compression and return
strokes of both cycles occur at the programmed test speed. Target deformation for both cycles begins
at the trigger position of the first cycle.
During the test the running screen is seen as shown below:
TEST: TPA CYCLES: 02
DEFORMATION: XXX.X mm
LOAD: XXXX.X g
III.19
TPA cycles will count down to show the number of cycles remaining. Deformation and Load will
remain live displays during the test.
Test results are shown on the reporting screen:
HARDNESS1: XXXX.X g

HARDNESS2: XXXX.X g
COHESIVENESS: XXX.XX
SPRINGINESS: XX.X mm
ADHESION: XXXX.X mJ
TEMP: XXX.X F
III.20
Hardness1 is the peak load of the first compression cycle.
Hardness2 is the peak load of the second compression cycle.
Cohesiveness is the ratio of A2/A1. A2 is the area under the compression stoke of the second cycle
and A1 is the area under the compression stoke of the first cycle. If the structure of the sample is
completely destroyed on the first compression, this ratio is zero. If the sample is perfectly elastic and
not damaged at all by the first compression this ratio is 1.0 Most food products will fall somewhere
in between 0 and 1.