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Long-form technical notes

Knowledge Centre

Reviewed editorial explainers that connect laboratory measurements to field decisions, limitations and next steps.

01Sampling · 8 min · reviewed Jul 2026

Why an accurate laboratory cannot rescue an unrepresentative sample

The analytical result describes the submitted portion. The sampling system determines whether that portion describes the asset, tank or fluid population you intended to assess.

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02Interpretation · 7 min · reviewed Jul 2026

Why a result inside a limit can still deserve attention

Absolute thresholds are one decision tool. Rate of change, correlated signals, sampling comparability and asset criticality can reveal a developing condition earlier.

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03Wear debris · 9 min · reviewed Jul 2026

ICP iron, PQ and ferrography answer different questions

Elemental concentration, bulk ferromagnetic response and particle morphology are complementary views of a wear-debris population—not interchangeable measures.

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04Fuel storage · 8 min · reviewed Jul 2026

Water, oxidation and microbial debris in stored diesel

Recurrent filter blockage is an observation with several possible mechanisms. Tank-layer sampling and examination of the retained material narrow the investigation.

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05Coolant · 6 min · reviewed Jul 2026

Why colour cannot establish coolant identity or compatibility

Dye is not a controlled universal code for glycol type, inhibitor technology, concentration or equipment approval.

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06Transformer oil · 9 min · reviewed Jul 2026

DGA is a pattern and trend, not a single-gas verdict

Diagnostic gases support hypotheses about electrical and thermal activity. Sampling integrity, generation rate, operating context and companion evidence determine confidence.

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