Do I have to use the Mad Millie Jar with the Culturing Flask?

by Kim

No, however, it has been designed to fit the Mad Millie jar perfectly. It just may not fit all style jars. 

Please ensure you use the Mad Millie Jars sold currently online (as pictured below) which are 13 cm x 13 cm x 20 cm and not the previously sold ones, as they are too tall.