RANCIMAT
Determination of oxidative stability of oils, fats and food products.
O que é RANCIMAT
Uma técnica de análise avançada
Determination of oxidative stability of oils, fats and food products.
What sets us apart
We don't hand over a spectrum. We hand over the interpretation.
Any lab can return peaks and numbers. Our report reads the data. Three differences define what we deliver — illustrated below with a real, anonymized case.
Multiple techniques, one integrated report
We don't hand back five loose reports. We cross-reference every technique's results into a single reading — each signal checked against the others — to reach an answer, not a pile of data.
- Contamination investigation — identifying and tracing the source of a foreign species.
- Performance degradation — explaining why a batch behaves outside expectations.
- New supplier validation — proving equivalence before switching.
3 LDPE batches · 4 techniques converge, NMR reveals the difference
In semicrystalline polymer systems, thermomechanical processing variables influence chain conformational dynamics¹. Solid-state NMR resolves chemical environments at the nanometer scale², sensitive to changes not detectable by XRD or FTIR³.
Technical justification anchored in the literature
Every technique choice and every inference in the report is backed by peer-reviewed literature — with citations in the text. The conclusion isn't loose opinion: it's a traceable argument, defensible in an audit and in front of the client.
- Numbered citations linking claim to source
- Official standards and methods referenced per analyte
- Auditable reasoning end to end
Conclusion and expert opinion
The report closes with a clear position, signed by the Principal Investigator: what the data shows, what can't yet be claimed, and the next step. It includes an honest caveat on the limits of inference — what separates a technical opinion from a guess.
- Explicit technical position, not just results
- Inference limits declared honestly
- Next-step recommendation signed by the P.I.
Four techniques confirmed equivalence; only the solid-state NMR revealed the subtle conformational change not distinguishable by conventional QC — a molecular signature consistent with the atypical filtration behavior.
Without the industrial line's parameters, no direct causal correlation can be established — a complementary step is recommended for elucidation.
Aplicações de mercado
Onde a RANCIMAT entrega resultados
Market Applications
Pharma
- Lipid excipient stability
- Gelatin capsule analysis
- Shelf-life studies
- Antioxidant evaluation
- Pharmaceutical oil quality control
Materials
- Biopolymer stability
- Industrial oil analysis
- Degradation studies
- Additive evaluation
- Lubricant quality control
Cosmetics
- Cosmetic oil stability
- Hair product analysis
- Rancidity studies
- Natural antioxidant evaluation
- Formulation development
FAQ
Frequently Asked Questions about RANCIMAT
How does the Rancimat instrument actually detect the onset of oxidation?
- The Rancimat method exposes a heated oil or fat sample to a controlled airflow, and volatile short-chain organic acids released as oxidation accelerates are carried into a measuring vessel containing water, where they increase the water's electrical conductivity. The sharp rise in conductivity marks the induction period endpoint.
What test conditions (temperature, airflow) are typically used in a Rancimat test?
- Standard conditions commonly use elevated temperatures (often in the 100-140°C range) and a fixed airflow rate to accelerate oxidation to a measurable timeframe; the specific temperature and airflow are chosen based on the sample type and the relevant standard method being followed.
Can the Rancimat induction period be used to directly predict a product's real shelf life?
- Not directly on a 1:1 basis — Rancimat accelerates oxidation under conditions far more aggressive than normal storage, so the induction period is used as a relative comparative metric (between formulations, antioxidant levels, or batches) rather than a literal shelf-life duration; correlating it to real-time shelf life requires additional stability data.
How is Rancimat testing used to evaluate antioxidants?
- An antioxidant's effectiveness is assessed by comparing the induction period of a sample with the antioxidant added against a control sample without it — a longer induction period in the treated sample demonstrates measurable oxidative protection, and different antioxidant types or concentrations can be ranked this way.
Is Rancimat testing specific to a particular type of oil or fat?
- No — the method is broadly applicable to vegetable oils, animal fats, biodiesel and any lipid-containing formulation, though sample preparation and interpretation account for the specific matrix, since different fat compositions (saturation level, existing antioxidant content) naturally oxidize at different rates.
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