Help needed to figure out why scent throw is so poor in a reed diffuser

[Jeremyvil]

A mixture of Dowanol DPM and Dowanol TPM will change the evaporation rate. You can also include IsoPar M in your mix of solvents. I cannot give you an exact formula of the solvents because it will differ for each fragrance. You will need to test for yourself. If you have the time, and the patience, and the equipment, why not measure the evaporation rate of each of the solvents to see for yourself which is the quickest to evaporate. You need to fill your container with the test material, add reeds and weigh for a number of days so that you can follow weight loss over time.

This may sound laborious, but I assure you this is how it is done. Before we presented any reed diffuser fragrance to a client we would have tested its weight loss over time. Usually we were expected to create fragrances that lasted for a specified length of time, measuring weight loss over time was the only way to check this.

"A mixture of Dowanol DPM and Dowanol TPM will change the evaporation rate". Correct me if I'm wrong but by changing evaporation rate, the diffusion will also slow down?

 

[David Ruskin]

"A mixture of Dowanol DPM and Dowanol TPM will change the evaporation rate". Correct me if I'm wrong but by changing evaporation rate, the diffusion will also slow down?

Or speed it up. It depends how much of the solvents you use. How much of each of the Dowanols used, depends on the fragrance concentrate. Each fragrance concentrate will require a different ratio of Dowanol DPM and Dowanol TPM. What that ratio is must be determined by experimentation.

 

[Jeremyvil]

Or speed it up. It depends how much of the solvents you use. How much of each of the Dowanols used, depends on the fragrance concentrate. Each fragrance concentrate will require a different ratio of Dowanol DPM and Dowanol TPM. What that ratio is must be determined by experimentation.

I use two ingredients: 25% EO + 75% Dowanol DPM. However, it seems that it's evaporating a bit too fast so I'm thinking how to slow down evaporation rate without slowing down the diffusion if that's even possible

 

[David Ruskin]

As you don't give the formula of your fragrance I cannot advise on that. From memory Dowanol TPM evaporates at a slower rate than DPM. If you can get some TPM it will do what you want. As I mentioned in post 42, a mix of DPM and TPM depending on the characteristics of your fragrance concentrate will enable you to achieve the evaporation rate you want.

 

[Kittycat74]

It’s very simple. No water whatsoever. 80% Augeo clean Multi is an environmentally friendly solvent so ticks all those boxes, and 20% fragrance. You can exchange a little of the Augeo for ethanol if you want a faster diffusion - maybe 10-15% - but no need for anything else. Use fibre reeds for the best diffusion.

Edited to add: Another fantastic newish biodegradable solvent is MMB by Kuraray. Use in a similar way to Augeo but if you leave out ethanol you can add water - adding around 5-10 makes it non-flammable, meaning you can ship abroad without it being considered hazardous. There were a lot of problems getting it after lockdown but it might be available again (Pell Wall sells it). I stopped selling but it was fantastic for reed diffusers and room sprays.

https://explore.azelis.com/en_GB/bnl_hcic/mmb-as-replacement-for-classical-solvents

 

[David Ruskin]

Kittycat74, have you read any of the previous posts on this topic? Maybe you should.

 

[Kittycat74]

Yes, I have. What exactly is your point Mr Ruskin?

 

[David Ruskin]

You seemed to be making suggestions that had already been made; that exactly is my point Mr/Ms (?) Kittycat74

 

[Kittycat74]

I provided specifics as there was much vague discussion and you'd covered the Dowanol side of things which I have no experience of - the OP mentioned Augeo, of which I do because I've sold diffusers for quite some time (until I recently stopped). There's no need to use water or ethanol with Augeo. I don't know why the OP was over complicating things with all the unnecessary additives. 80% Augeo / 20% fragrance is all that's required. I also add the MMB comment because it was only briefly mentioned. Again, I provided a specific ratio and a useful tip regarding hazardous substances/shipping and how to make what's usually considered a hazardous substance non-hazardous. As a business owner it's the kind of thing I'd be pleased to know about. Overall it was really just to advise that there's no need for a bunch of things. Just Augeo or if you want to use the Vegan version - Augeo Crystal. That's a morsel of new information -does that pass the resident Forum Police's stringent standards?

 

[David Ruskin]

No need for sarcasm. I wondered and you answered; enough. Wouldn't dare describe myself as "resident Forum Police"; what an idea!

 

[Kittycat74]

I’m teasing you. I have the greatest respect for you. I expect the OP has figured it out by now anyway (I hadn’t spotted this was from 2022).

No need for sarcasm. I wondered and you answered; enough. Wouldn't dare describe myself as "resident Forum Police"; what an idea!

P

 

[greeny16]

can the formula be modifed to - replacing DPM to DPG instead?
DPM works well for my room spray formula but to make it in reed diffuser, i thought it shd be DPG instead. Please corect me if i am wrong

 

[David Ruskin]

DPG is not the right solvent for Reed Diffusers, it doesn't work. I have told you what solvents I have experience of, and those that I do not.

 

[greeny16]

DPG is not the right solvent for Reed Diffusers, it doesn't work. I have told you what solvents I have experience of, and those that I do not.

DPG alone doesnt work right? If DPG+Ethanol, it will work right? DPG is soluble in ethanol and it can dilute the fragrance

 

[David Ruskin]

DPG IS NOT THE RIGHT SOLVENT.

 

[ShreeJeeth]

It’s very simple. No water whatsoever. 80% Augeo clean Multi is an environmentally friendly solvent so ticks all those boxes, and 20% fragrance. You can exchange a little of the Augeo for ethanol if you want a faster diffusion - maybe 10-15% - but no need for anything else. Use fibre reeds for the best diffusion.

I'm from India and I it is difficult to source Augeo. Can you tell which company manufactures augeo or who resells it?