Agarose, for Routine Gel Electrophoresis, Molecular Biology Grade, High Gel Strength, 50 Grams

https://www.amazon.com/Agarose-Routine-Electrophoresis-Molecular-Strength/dp/B00I31YVLW So full disclosure I’ve only ever used the lotion option. I only read a study using hydrogel . But after a bit of reading I think this one might work. Once it’s mixed with water to form a hydrogel and some spores and Inulin or other prebiotic have been added it should be effective . ( if also somewhat perishable) Good luck!