The first step for DNA metabarcoding of invertebrate kick samples from stream ecosystems is sample homogenisation. The samples often contain hundreds of organisms which have to be dried and then homogenised, to assure that the DNA of all specimens in mixed. Only then every individual in the sample can be detected, extracting just a small subset of the ground tissue. We are using the IKA ULTRA-TURRAX Tube Drive control system for tissue grinding, as discussed in a previous video. In this new video we are detailing the complete process from sample handling, drying over night and grinding using invertebrate kick samples from Finland.