Sustainability is a big topic at BlueSens and we would like to involve you, our customer, and give you the opportunity to act more sustainably together with us.
The BlueVary is one of our most popular sensors due to its replaceable cartridge based design. The number of devices in use and the corresponding number of gas cartridges in circulation is therefore high.
But what happens to the expired cartridges? Do they end up in the trash? 

Please don't throw them away !
Help us to do something for the environment and collect the expired cartridges at your place. 

Follow the instructions here to return them to us. We'll take care of them.