I used to get pre-made sterilized test tubes of medium from Phyto Tech but it looks like they aren't making them anymore. Too bad, because that eliminated screwing around with a pressure cooker. You can buy a cute HEPA filter kit that can be mounted on a plastic storage bin and create a makeshift laminar flow hood. Haven't put that together yet but the next time I need to do embryo rescue I'll get it all set up and report how well it works. Bob Zone 7 _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net https://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> PBS Forum https://…