Agar Agar Powder - 15 grams, Laboratory Grade

works well for petri dish prep. Color is less and texture is fine

We purchased petri dishes that didn't include agar on accident so I bought this to correct my error. It was for a simply homeschool project on fermentation. The agar was easy to mix and set up nicely. I will buy it again for our next project!

We learned the hard way this agar won't grow much of anything without adding some nutrients. After three experiments, with a total of 30 petri dishes, it grew nothing. We contacted our child's teacher who informed us we probably bought just the agar (gelatin). We used the remaining powder, seasoned with some bullion and sugar, and all 20 petri dishes grew fantastic colonies within a few days. The agar, itself, is actually of very good quality. It didn't dissolve in the incubator as regular gelatin did. I measured out five portions of 3 grams each which I mixed with 200ml of distilled water. This is enough to fill ten 80-100mm petri dishes with about 1.5 tablespoons of agar. Be sure to bring it to a boil, or it won't set. You could actually make the entire 15 gram package of agar with 1 liter of water and refrigerate the portion you didn't use. The agar will return to a liquid when heated.

This was a great buy for my homeschooled children. It gave us a chance to do some fun science experiments and was very affordable. They had a lot of fun! There was enough to prep over 30 petri dishes with the first batch and I could probably get a second batch out of it. The only issue was taking the time to pull up metric conversion charts and guessing until I got the right combination to mix it up, but still worth it!

Was very easy to mix up an use in petri dishes. Very durable surface for inoculating - the gel doesn't tear easily.

OK agar but not great agar. I have two bags of this agar and have tried both, about 1\2 of my dishes grew otherwise healthy bacteria. This caused a control failure and some data had to be stripped from the experiment. Not sure if I got a bad batch or it was some other factor but this was not near as good as other agars I have used in the past. Pro: Cheap Con: Didn't work that well

It worked very well for me because I really needed it for my science fair. I like how it was estimated to come for a certain time and came a little bit before then, that really helped.

This is not nutrient agar and will not grow bacteria found out 5 days after inoculating plates now we have to repeat the experiment huge waste of time