INTERFACE DEMONSTRATION

What explains the downstream change?

Demo notes stay on this device. No account upload.

Not shared · demo only

2 warning types across 3 samplesCalibration record not supplied · Uncertainty values not supplied

Question

This fictional investigation asks whether measurements from two river locations can be compared.

The example does not establish a pollution source or a scientific finding.

Evidence & measurements

SAMPLE DATA

Fictional measurements — original sample IDs and units retained
Sample	Location	Nitrate	Missing documentation
RW-01	Upstream	2.1 mg/L	Uncertainty value
RW-02	Downstream	4.6 mg/L	Calibration record
RW-03	Downstream	4.2 mg/L	Uncertainty value

Flags identify missing information, not instrument failure.

Evidence connections

Open an item to inspect its evidence and next action.

Source passage

Fictional sampling protocol, section 2.3: collect samples using the same measurement method.

Assumption

Measurements are comparable across sites.

Needs justification

The calibration record was not supplied.

Next action
Attach the record, then assess comparability.

Protocol step

Compare upstream and downstream samples only after checking methods and uncertainty.

Measurement

Three illustrative values are listed above. No aggregation or conclusion has been calculated.

Open objection

Were the instruments calibrated using the same method? This remains unresolved.

Check & decide

Needs justification

Were the instruments calibrated using the same method? This remains unresolved.

The example does not establish a pollution source or a scientific finding.

Attach the record, then assess comparability.

Review & export

Review package preview

Download contains fictional measurements, unresolved warnings and your demo note. It does not publish or grant access.

Your note

Not shared · demo only

Languages, accessibility & lightweight delivery

Multiple interface languages, right-to-left Arabic, native keyboard controls, visible focus and inline mobile details. No external fonts, images, graph libraries, analytics or automatic network polling.

Simple view stacks the same content in one column. Both views download the same lightweight files; this switch does not reduce transferred bytes.

This demonstration does not translate the full ASTRA platform. Translations need native-speaker review; screen-reader, physical-device and slow-network testing remain pending.

Use fictional notes here; do not enter confidential research.