Sample assessment
Amber was supplied as large particles and pre-crushed. Its median-size objective and broad coarse tail need separate attention. The laboratory test record documents this preparation only; applying the method to another batch requires a matched trial.
Recorded objective
Reduce the median particle size to approximately D50 = 40 µm.
Equipment and selection
The recorded planetary machine is XQM. The corresponding TENCAN family is the Vertical Planetary Ball Mill. The jar volume identifies the test container and does not establish an exact machine variant or production capacity. Equipment association follows the recorded machine designation.
Test setup
| Recorded planetary machine | XQM |
|---|---|
| Documented setup | 500 mL zirconia jar; standard zirconia balls; 147 g pre-crushed amber; dry milling; procedure speed setting 450. |
| Recorded operating cycle | Run 5 / pause 1; units not stated in mode field |
Speed values are reproduced as recorded settings. A rotational unit and planetary-disc versus jar-speed basis are not stated, so these numbers are not labelled rpm.
Recorded procedure and results
The amber was crushed before planetary milling. At 1 hour the sample measured D50 = 67.98 µm and D90 = 161.85 µm. At 2 hours, D50 was 33.08 µm and D90 was 112.79 µm. The procedure says other portions were processed as requested but supplies no further measurements.
Interpretation
The recorded median moved below the approximate 40 µm objective by 2 hours. The much larger D90 shows that the coarse portion remained broad; this result does not mean all amber particles were approximately 40 µm.
Practical precautions
The separate speed field is 650 while the procedure states 450. Resolve this discrepancy before repeating the run. Retain the pre-crushing step and monitor sample temperature; the record contains no temperature measurements.
TENCAN alternatives to evaluate
For follow-up comparison, consider the TENCAN Omnidirectional Planetary Ball Mill. For amber, a matched QXQM trial can test whether changing orientation affects the coarse amber tail at the stated median objective. Keep sample mass, media and sampling times controlled. This is a proposed comparison; the test record does not demonstrate a superior result for that alternative. Confirm jar compatibility and the permitted complete loaded mass before selecting a configuration.
Procedure records XQM; related product is the corresponding tested machine family. Exact variant is not inferred from jar size.
About this trial
TENCAN laboratory trial, 2023. Observations above come from this experimental record; selection considerations and proposed comparisons are engineering interpretation. Results apply to this sample and recorded conditions.