Looking for a automated stirrer for 10 ml vials

[Peter Brom]

Do you get a bean to put inside the vial?

Yes, it's a small bean that fits in the 10ml vial. You also get a small magnetic stick to pull the bean out. Very easy. I tested the Nitrate, Nitrite, and Ammonia levels 2 times. 1 time without the bean (manual shaking) and 1 time with the bean (stir). De measurement for Nitrate went from 5.1 to 4.8 ppm, Nitrite from 0.034 to 0.021, and Ammonia from 0.04 to 0.02.