Collection Instruction Citizen Science

Thank you for participating in our project. Samples can be collected using the following instructions.

Sampling Instructions

If you have questions, please feel free to contact me at



Dear all,

As part as a research project we want to use our network to collect samples around the world: A true Citizen Science Project! As you might be aware of, plastics are a major issue in the environment. One group of plastics that we are very concerned about are microplastics. A short intro on the issues associated with microplastics can be found here.

So… what are we asking? That you visit a beach on your vacation, collect some sand, and return it to Leiden University College where we analyze the samples. We hope you can bring back 5 small bags of sand, take a picture from the beach, and use your cell phone/mobile to get the GPS coordinates… see instruction above.

Please let us know if you have questions,

Thijs Bosker (, Martina Vijver and Paul Behrens