The ETF has the following members
| Country | - | - | Homepage | |
| Austria | - | - | ||
| Belgium | - | biodidack@online.be | - | |
| Czech Republic | - | tlapaksro@volny.cz | - | |
| Denmark | - | - | www.dzk.dk | |
| Germany | - | vdp@praeparation.de | - | www.praeparation.de |
| Italian | - | - | www.atitassidermia.it | |
| Netherlands | - | - | www.prepareren.nl | |
| Switzerland | - | - | www.praeparation.ch |
