Bottles to take samples, store and send to the Fula lab. Every necessity is included. We need at least 200ml liquid substance per sample to perform a full test. If you do not have enough fluid, send us everything you can collect and we will test this as well as possible. For a sample of solid substance, you can use the enclosed closing bags. Contents: Plastic bottles with caps, labels, closing bags and envelopes to send the samples to the Fula lab.