A buyer opens a drum of argan oil and finds a layer of fine particles at the bottom, or notices threads suspended in a sample bottle. Is it adulteration, a defect, or a natural trace of pressing? The answer depends on exactly what you see and on how the oil was purified.
What you might be looking at
- Fine sediment: small solids from kernel paste or plant tissue that settle over time.
- Cold cloudiness: appears as temperature drops and clears when warmed. See our article on argan oil cloudiness in cold weather.
- Abnormal signs: a separate watery layer, mould-like threads, a rancid smell or foreign particles. These call for immediate checks.
Settling and filtration
Freshly pressed oil carries fine particles. Producers use settling (leaving oil to rest in tanks, then carefully drawing off the clear oil) and/or filtration (passing oil through a medium that holds back suspended particles). Finer filtration yields a clearer oil that is easier to use with droppers and pumps, but may add cost and processing time. Leaving some particles is not automatically fraud, but it gives you less control over appearance.
Quick diagnosis
| Observation | Possible cause | Action |
|---|---|---|
| Fine particles that settle | Incomplete settling or filtration | Let it rest, compare with the agreed specification |
| General haze that clears on warming | Cold effect | Warm gradually to room temperature and recheck |
| Droplets or a distinct layer at the bottom | Possible water or moisture | Photograph and contact the supplier before accepting the lot |
| Sharp smell or bitterness | Storage issue or oxidation | See our receiving inspection checklist |
| Oddly shaped or coloured particles | Possible contamination | Quarantine the lot and do not fill from it |
Why it matters at filling
Particles can clog droppers and pumps, make bottles from one batch look uneven, and vary the look between deliveries. See also dropper, pump or spray.
Writing a specification
- Purification method: settling only, or settling plus filtration.
- Test protocol: a sealed sample in clear glass, fixed time and temperature, then inspection.
- Which particles are accepted or rejected, with signed reference photos.
- A dispute procedure using a retention sample.
We give no filtration threshold here because it varies by producer and use. Ask your supplier for its actual process.
On receiving drums
- Record the seal and drum condition.
- Do not shake before inspecting.
- Sample from the top and near the bottom with a clean tool.
- Rest at room temperature for a day or two.
- Photograph under constant lighting.
- Compare with the specification and alert the supplier if needed.
When drawing off, avoid the bottom layer, do not use the last portion without checking it, and agree any extra filtration with the factory first.
FAQ
Is sediment a sign of adulteration?
Not necessarily. It can be a natural trace of pressing. A watery layer or an abnormal smell, however, warrants a check.
How do I tell sediment from cold cloudiness?
Warm the sample gradually. If the haze clears, it was cold; if particles settle over time, it is sediment.
Should I always demand filtered oil?
It depends on your product: fine droppers and pumps generally work better with clear oil.
Can I filter it myself?
Technically yes, but agree it with your supplier first, since extra handling exposes the oil to air.
Bottom line
Write the specification before ordering, test consistently and keep reference photos. Request a quote at assilouargane.com/quote or browse our products.
