The Exhale process
Our lab results & certificationsBelieve it or not, coffee beans aren't beans at all, they're actually the seeds of a fruit which grows on a tree!
Through poor processing and over roasting coffee can lose most of it's natural, fruity goodness. But worse still, most acquire potentially harmful contaminants like mycotoxins and pesticides (1).
Exhale coffee looks and tastes like any other. But our unique process involving 9 different, independent lab tests locks in more of coffee's healthiest compounds while keeping out the bad. All done in the most sustainable way, without sacrificing on taste.
Our 3 pillars of health, sustainability and taste are equally prioritised through every stage of our process.
Our independent lab tests
For your health
Our process involved 9 different tests at independent laboratories across Europe to find a coffee with more of the good stuff and less of the bad.
We're constantly testing coffees from across the globe looking for the next best thing.
Here's what we test for, along with certificates. There are too many to upload and refresh them all so if you want a certificate for a specific coffee please email hey@exhalecoffee.com and our team will be happy to help.
You can learn more about what all this means for your health over on our Science page.
The science on coffeeChlorogenic Acid
Chlorogenic acid (CGA) is the most abundant and the most researched polyphenol in coffee.
Most of our process is focused on crafting a coffee high in CGAs, while still optimising for other, well-studied compounds such as melanoidins, cafestol and kahweol.
We've tested for CGAs perhaps close to 100 times and attached is one such certificate.
Polyphenols
Polyphenols are plant-based phytonutrients.
It's coffee's polyphenols (specifically chlorogenic acid) which are most often cited as being responsible for coffee's impact on the body.
Vitamin B3
Coffee is a natural source of an array of vitamins and minerals including riboflavin (vitamin B2), niacin (vitamin B3), vitamin B5, calcium, sodium, magnesium and potassium.
But it is especially high in vitamin B3. This makes it one of your diets richest sources behind meats.
Mould and Yeast
Moulds and yeasts produce unwanted mycotoxins. These are a particular issue in coffee with one study showing it provides 12% of your total daily exposure to them.
Read more in our article 'Mycotoxins in coffee: Do we really need to avoid them?'
This is why it's important to drink a coffee that's been independently lab tested to be free from them.
Pesticides
Coffee is one of the worlds most sprayed crops with pesticides.
Non-organic pesticides have been shown in studies to have detrimental effects and one in-particular, Glyphosate, has received especially bad press for its impact on our planet.
Read more in our article on 'Is Organic Coffee better for you or the planet?'
We buy coffee only from organic farms, then lab test to ensure it's free from pesticides.
Ochratoxin A (a mycotoxin)
Ochratoxin A is a type of mycotoxin.
Read more about them in our article 'Mycotoxins in coffee: Do we really need to avoid them?'
This is why it's important to drink a coffee that's been independently lab tested to be free from them.
Aflatoxins (a mycotoxin)
Aflatoxin is a type of mycotoxin.
Read more about them in our article 'Mycotoxins in coffee: Do we really need to avoid them?'
This is why it's important to drink a coffee that's been independently lab tested to be free from them.
Heavy Metals
From our research, heavy metals are less of an issue in coffee than moulds, mycotoxins and pesticides which we should all avoid. But if you already know you have an issue with them, then it is worth drinking a lab tested coffee like Exhale.
Bonus: Caffeine
We continually test our coffees for a variety of the above compounds under different conditions.
But recently, we tested all three of our coffees for caffeine.
Read more about those results in our article: 'The caffeine content of Exhale Coffees'
Bonus: Magnesium and Potassium
Two new bonus tests as of September 2025:
Online sources say a cup of coffee contains 3% of your total recommended daily amount (RDA) of potassium and 1-2% of your RDA of magnesium.
We recently tested Exhale and found that 1 brewed cup of Exhale contains 9% of your RDA of Magnesium and 11% of potassium. So if you drink our recommended 2-3 cups of Exhale a day, you could be getting 27% of your daily Magnesium and 32% of your daily potassium requirements from coffee alone!!!
Our organic coffees
Learn more in
Your Exhale Journal
We've written our own fully cited articles on everything from coffee's impact on cholesterol to why athletes need antioxidants. Here are a few of our faves:
