Looking for a reliable and convenient viscometer to measure your chocolate? We got you covered!
Let’s go down to tips on measuring chocolate using ATAGO VISCO Digital Viscometer:
Tip #1: Selecting the best suitable spindle
Let's imagine how melting chocolate is. It's obviously more viscous than water, but less viscous than honey.
Let this diagram help you with this:
VISCO has three spindles A1, A2, A3.
Let's try spindle A2.
For chocolate, let’s use the disposable paper cup for more convenience. The disposable paper cup is equivalent to the L beaker. So now we’ll set the combination as “A2L” (Spindle A2 and L Beaker combination).
Tip #2: Selecting the best suitable speed
Let's try lower speed at first at 12rpm.
Don’t forget to jot this all down for your record:
|
Spindle |
A2 |
|
Beaker size |
L |
|
Speed |
12rpm |
NOW START!
Result:
|
Time |
60 sec |
120 sec |
180 sec |
|
Viscosity (mPas) |
23,737 |
23,598 |
23,555 |
|
Torque (%) |
75.6 |
75.2 |
75.1 |
|
Temperature (°C) |
38.7 |
38.1 |
37.4 |
Tips: Torque % should be within 10-100%.
Let’s try using a different spindle, A3.
|
Spindle |
A3 |
|
Beaker size |
L |
|
Speed |
12rpm |
Result:
|
Time |
60 sec |
120 sec |
180 sec |
|
Viscosity (mPas) |
23,386 |
24,095 |
23,959 |
|
Torque (%) |
25.3 |
25.1 |
24.9 |
|
Temperature (°C) |
40.3 |
39.9 |
39.5 |
Note: Spindle A1 did not work with chocolate since its viscosity is high. Please refer the first diagram regarding tips to choosing beaker and spindle for your sample.
You can try with different speeds and time too! VISCO has the auto stop function where you can set how long you would like to measure at a time. The measurement will automatically stop according to the time you set (e.g., 30 seconds).
Tip #3: Recording results every 10 seconds
|
Spindle |
A3 |
|
Beaker size |
L |
|
Speed |
30rpm |
Result:
|
Time |
10 sec |
20 sec |
30 sec |
40 sec |
50 sec |
60 sec |
|
Viscosity (mPas) |
12,933 |
12,921 |
12,914 |
12,902 |
12,894 |
12,886 |
|
Torque (%) |
35.5 |
33.5 |
33.5 |
33.5 |
33.4 |
33.4 |
|
Temperature (°C) |
41.2 |
41.1 |
41.1 |
40.9 |
40.8 |
40.7 |
Tip #4: Notes and Small tips for Beginners
-
Viscosity usually goes down as time passes due to frictional heat. If the sample is heated, its viscosity goes down.
-
To prevent drastic decrease of temperature, heat the cup adapter by immersing into hot water.
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