Additional prepaid return envelope
If you're purchasing laboratory test kits (excluding our 4count season packs*) and need additional envelopes in order to return samples to the lab on seperate occassions then please request extra envelopes for your order here.
Where possible please return samples in the same envelope - it's better for the planet and saves postage costs too. Thank you!
*A different discount system for postage already applies to these products 🙂