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What are Spärkel Carbonators made of?Updated 9 months ago

The carbonators are made of a special granulation and concentration of citric acid and sodium bicarbonate.  Spärkel carbonators are placed in a sealed chamber within the Spärkel appliance to generate the CO2 gas that travels to the bottle to sparkle and infuse the contents of the bottle. The carbonator is not placed in the bottle and the carbonator is not consumed. Each carbonator will generate exactly the right amount of CO2 to sparkle a 750ml (25.4 oz) bottle.

The citric acid and sodium bicarbonate are stored separately in small quantities. Please keep them sealed until using with the Spärkel appliance. They are individually packaged and sealed for convenient usage and to keep moisture away from the carbonator.

Citric acid and sodium bicarbonate are commonly found in food products. When used as a Spärkel carbonator, they are not ingested. When removed from their packaging sodium bicarbonate and citric acid are generally safe to handle but are potential eye irritants and should not be placed in contact with eyes.  If either comes in contact with the eyes, rinse the eye out with water.

Important! Never use DIY carbonators in a Spärkel System. Here is why.

FAQs About Spärkel Carbonators:

Q. Why doesn’t Spärkel not offer a bulk Carbonator option to cut down on waste?

A. Spärkel Carbonators are individually packaged and sealed for precise measurement and to keep moisture away from the carbonator. Even a very small variation in quantity will impact the quantity of pressure generated. It would be impossible to get an accurate measurement every time with a scoop as the quantities required are precise. Over time, even small amounts of extra or imbalanced ingredients can lead to the system building additional pressure and residue, which will damage the Spärkel System over time and cause safety hazards. 

Q. Why are Spärkel Carbonators made of plastic?

A. After months of research and testing, our engineering team was able to make the sachet out of a single polypropylene plastic, which carries the recycling symbol #5, a commonly accepted recycling category. The sachets were made with as little material as possible with each carbonator using only 0.8g gram of recyclable plastic. This is compared to approximately 30 grams of plastic used in each plastic sparkling water bottle.

Q. What if my local recycling program doesn’t accept recycling symbol #5?

A. Number 5 plastics can be recycled through many curbside programs. If your area does not accept #5 plastics, please contact your local waste & recycling facility or visit the links below to learn more:



Plastic Film Recycling Directory

Recycle Nation


BC: Recycle BC 

NL: rethinkwaste 

NS: Scotia Recycling Limited

SK: SaskAbilities

AB, ON, MB, NB, NT, NU, PE, QC, YT : Please check with your local recycling facility.


Q. Why can’t Spärkel make their Carbonators out of paper?

A. Unfortunately any sort of moisture is not a friend of Citric Acid and Sodium Bicarbonate. If the Carbonators are exposed to any moisture or allowed to cross-react across permeable barriers (like paper), they will decline in effectiveness.

Q. Why doesn’t Spärkel use compostable or biodegradable packaging?

A. We are in the process of researching & developing options that would allow our Carbonators to be packaged without plastic. Issues sourcing viable and truly biodegradable solutions and varying local regulations make compostable and biodegradable packaging tricky, but we are taking steps toward a zero-waste solution in the future.

Q. What’s the environmental footprint of Spärkel Carbonators?

A. Our Carbonators are made of thin polypropylene and carry recycling symbol #5, a commonly accepted recycling category. Only 0.8g of plastic goes into each Spärkel Carbonator, compared to approximately 30 grams of plastic used in each plastic sparkling water bottle. In other words, 37.5 bottles made with Spärkel use the same amount of plastic as one traditional sparkling water bottle. This is in addition to the environmental benefits of not shipping cases of water across regions or requiring two-way shipping to exchange CO2 tanks. 

Q. Why not lower the price of Spärkel Carbonators?

A. We recently reduced the price of our Carbonators thanks to the support of our growing community enabling our production volume to increase. Greater volume equals bigger savings that will be passed on to our customers. We will continue to work to make Spärkel as accessible as we can! Don’t forget you can subscribe and save on Spärkel’s Carbonator Subscription Program with discounts according to your timeline.

If you have any comments or questions regarding DIY carbonators, we would love to hear from you! Reach out to us at [email protected].

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