Review on Heavy Duty Vortex Shaker With Touch And Continuous Mode - 110V by Austin Hampton

If you are using this to mix small items (like a microcentrifuge, or even up to a 50 mL conical) this is a fantastic little machine. And I'm sure that's what it was designed for. I needed something that was going to mix 5-10 lbs at a time, and thats where it isn't quite strong enough. BUT the suction on the lid is pretty strong, and you really can't beat the value here. I still use it, but with 5-10 lbs it gets too heavy and it stops vibrating, so its a game of holding some weight up, but still letting it vibrate enough to mix.