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API Testing
1. Mix the sample on the “STIR” setting for 10 seconds.
2. Set the speed to 600 RPM. Wait for the reading to stabilize and then
record the dial reading and temperature.
3. Set the speed to 300 RPM. Wait for the reading to stabilize and then
record the dial reading and temperature.
4. Stir the sample again for 10 seconds.
5. Set the speed to “GEL” and immediately shut o the power.
6. As soon as the sleeve stops rotating, wait 10 seconds and turn the power
on while looking at the dial. Record the maximum dial deection before
the gel breaks. This is the 10 second gel strength.
7. For the 10 minute gel strength, re-stir the uid and wait 10 minutes before
recording the maximum dial deection.
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