Fragrance oil for reed diffusers: ARDF Base, dosage & professional application test

A high-quality reed diffuser is a coordinated system consisting of:

Fragrance composition + carrier base + reeds + container + ambient conditions.

The performance is not solely determined by the highest possible fragrance content.

The liquid must be able to be transported through the reeds and then released into the room air in a controlled manner.

How does a reed diffuser work?

Several processes work together in the release of fragrance.

Capillary Transport

The diffuser liquid moves upwards through the structure of the reeds.

Evaporation

At the enlarged surface of the reeds, volatile components are released into the room air.

Distribution in the Room

The released fragrance molecules then spread throughout the environment.

Therefore, fragrance performance depends on, among other things:

• Viscosity
• Fragrance composition
• Base
• Reeds
• Bottle opening
• Room temperature
• Air movement

.

What is the Aroma Nova ARDF Base?

The ARDF Base is intended as a carrier system for the development of room fragrance products.

Aroma Nova currently lists two initial formulations for its own application tests:

These mixtures are Aroma Nova starting formulations and should not be understood as a universal industry standard for every fragrance and every diffuser. The current ARDF page mentions exactly these two systems.

What is the BASE version?

Aroma Nova's BASE fragrances are 100% concentrated fragrance compositions without added fillers or solvents. This allows them to be further formulated with suitable carriers, fixatives, or solvents.

Therefore, the old formulation:

"BASE Series – standardized"

should no longer be used.

Correct is:

BASE = 100% concentrated fragrance composition without added fillers or solvents.

Why does a diffuser need a base at all?

An undiluted fragrance concentrate does not automatically possess the ideal physical properties for a reed diffuser.

A suitable base can, among other things, help to:

• Adjust viscosity
• Enable liquid transport
• Control evaporation behavior
• Evenly distribute the fragrance.

The final behavior must still be tested with the specific fragrance composition.

Does more fragrance automatically mean a stronger diffuser?

No.

For a reed diffuser, the liquid must be transported efficiently through the reeds.

A formulation with a higher fragrance content, for example, may be more viscous and therefore move slower through certain reeds.

Therefore, the question should not be:

"How do I get as much fragrance oil into the bottle as possible?"

but:

"Which formulation provides the best controlled fragrance release with my fragrance and my reeds?"

What role do the reeds play?

The reeds determine a large part of the active evaporation surface.

Relevant factors are:

• Number
• Diameter
• Length
• Material
• Pore structure.

More reeds can enhance fragrance release, but can also increase liquid consumption.

Therefore, I would not use a universal table like:

10 m² = 4 reeds
20 m² = 6 reeds

as a technical standard.

The appropriate setup must be tested on the real product.

Do rattan reeds need to be turned regularly?

Turning can temporarily create a more wetted surface, thereby increasing fragrance release.

However, it can also increase consumption and lead to contact of the diffuser liquid with hands or surfaces.

Therefore, regular turning should not be presented as a mandatory technical rule.

The instructions for use of the finished product should be created based on your own tests.

How long does a reed diffuser last?

A fixed statement like:

"4–6 months"

cannot be guaranteed for every bottle and every formulation.

The lifespan depends, among other things, on:

• Fill volume
• Number and type of reeds
• Bottle opening
• Temperature
• Air movement
• Fragrance composition
• Formulation.

Therefore, an in-house evaporation test is more reliable than a universal time promise.

Professional Evaporation Test

For a new diffuser, at least several identical samples should be prepared.

Day 0

Document:

• Total weight
• Fill weight
• Color
• Clarity
• Number of reeds.

After 24 hours

Check:

• Start of fragrance release
• Wetting of the reeds
• Homogeneity.

After 7 days

Evaluate:

• Fragrance intensity
• Fragrance character
• Weight loss.

After 30 days

Document:

• Remaining quantity
• Color change
• Evaporation rate
• Residues.

Subsequently, monitoring can continue monthly.

What should remain constant in a diffuser test?

For a comparison of different formulations, ideally:

• the same bottle
• the same reeds
• the same fill volume
• the same location
• the same room temperature.

Only then can it be assessed whether the formulation actually causes the difference.

IFRA and Safety

Even with room fragrance products, the relevant IFRA documents for the specific fragrance composition and end application must be considered. IFRA Standards can prohibit, restrict, or specify fragrance components; a Certificate of Conformity confirms compliance for the stated purpose, but does not replace a complete safety assessment or legal review.

FAQ

Is 50% DBB + 50% ARDF Base always optimal?

No. It is an Aroma Nova starting formulation for tests. The final product must be verified.

Is 25% BASE + 75% ARDF Base always optimal?

This is also a starting formulation. BASE itself is a 100% concentrated fragrance composition.

Why does my diffuser become weaker after some time?

Possible factors include evaporation progression, reeds, formulation, air movement, or changes in the fragrance composition.

Are residues automatically a fault of the base?

No. Residues must be considered in the context of the entire formulation and evaporation.

Can I change the intensity by adjusting the number of reeds?

Yes, this can be part of product optimization. However, the result should be tested.

Conclusion

A professional reed diffuser is developed as a complete system:

Fragrance + ARDF Base + Reeds + Bottle + Room Climate.

Aroma Nova's starting formulations facilitate the beginning of development. However, the final formulation should always be confirmed through evaporation, stability, and application tests.

Expertly reviewed: Aroma Nova Product Development
Status: August 2026

Technical Sources

Aroma Nova – current ARDF starting formulations.
Aroma Nova – BASE fragrance concentrates.
International Fragrance Association – IFRA Standards.