NET MASS

0.0000 g

UNSTABLEMin 0.100 gDoor closed

TRAINING

Mission

Target net mass0.2527 g

Balance220 g • d = 0.1 mg

Training smallest net weight0.100 g

Guidance

Beginner TrainingPower the balance, then verify that the pan and draft shield are clean.

Readiness evidence

PowerOFF

Pan / shieldCHECK

LevelOFF-CENTER

Thermal stateNOT READY

Routine checkNOT RUN

Draft shieldCLOSED

Environment monitor

Room temperature22.2 °C

Relative humidity49 %RH

AirflowCONTROLLED

VibrationLOW

STATIC THERMAL LEVEL SHIELD

Competency

Preparation100

Environment100

Balance checks100

Handling100

Measurement100

Documentation100

Audit trail

CONTROLS

Instrument

The 3D front-panel keys are also clickable: POWER • 0/T • ADJ • REC.

Draft shield & vessel

Sample dosing

Close the draft-shield door after dosing and wait for the stability indicator. The sample is evaluated on net mass, not vessel + sample mass.

Metrology evidence

Weight IDE2-100G-07

Nominal mass100.00000 g

Conventional mass100.00012 g

Expanded uncertainty0.00006 g

Calibration due2027-03-31

Values are fictional PQS training metadata. The routine-check decision is made against the conventional mass value, not the nominal label alone.

Measurement

Corrective actions

Use the evidence first. In Expert mode, a corrective action may be unnecessary if it does not match the hidden cause.

Training faults

Available in Free Lab. Expert mode hides the active root cause until evidence supports a diagnosis.

Session

PQS

Guided Training activePower the balance to begin.

Performance Study

Repeatability & Minimum Weight

A simulated 10-reading study demonstrates how repeatability can be used to estimate the balance minimum weight in the training environment.

Readings

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Standard deviation

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0.41d floor

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Observed minimum-weight estimate

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User smallest net weight

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Suitability

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#	Reading (g)	Deviation (mg)

Training note: The simulator demonstrates the USP minimum-weight relationship using repeatability and excludes tare-vessel mass. This study result is evidence; it does not automatically overwrite the previously qualified 0.100 g training minimum. Formal limits and changes belong to the laboratory qualification/control process.

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Analytical Balance 3D Virtual Instrument Laboratory

Balance Routine Check & Test-Weight Record

Analytical Balance Evidence Review

Repeatability & Minimum Weight

Analytical Weighing Competency Review

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