The current manufacturer I use produces the recycled Compots with off cuts from the factory floor so at this stage I know there in not an issue with the recycled plastic leaching chemicals into the soil. You must not stand on the Black Recycled Compots as the tabs can break so they are better used in the Above Ground Method or any raised garden bed where you are not likely to walk on the pots.
In the past the Recycled Compots have been made from a mixture of plastic (called Kerbside Plastic) which could potentially leach chemicals into the soil all depending on what the plastic was used for before it was recycled. These older products are not currently produced but may be used if there is not enough off cuts from the factory floor. The manufacturing process used to produce this product can only use recycled kerbside plastic or factory offcuts. Other recycled plastic materials used in many recycled products are not suitable for the process required to produce the Compot.
The black recycled Compots are not as strong as the green virgin plastic Compots. As mentioned you can break the tabs on the lid if you stand on them and they may not last as long as the virgin green ones which can be recycled at a time when they finally fall apart.
I do not guarantee the black recycled Compots because they could potentially leach chemicals into the soil depending on where the recycled plastic comes from, as it is impossible to know what the plastic container held before it became recycled plastic. There may be nothing in them but unless you test every batch of plastic you can’t know for sure. This testing is not likely to happen due to the cost involved as they would have to test every batch.
I have customers who have them in their veggie garden but I cannot recommend it and nor can I guarantee these pots as they are weaker than the green virgin Compots. But the choice is yours in the end. The green ones can be recycled when you are finished with them. The Black ones get weaker with each recycle phase until they are not useable at all.