Magnetic stir plates

[pipapat]

I have seen many people build them, but i need one that can handle big starers.

Any lab brands anyone would recommend so i can search ebay for a used one?

My old unit is starting too go. It was a small unit purchased from the local high school.

 

[Sawdustguy]

How big is big?

 

[pipapat]

1 gallon starters for lagers.

 

[Sawdustguy]

There are some brand new 7" x 7" magnetic stirrers on ebay for $250.

 

[ShortSnoutBrewing]

DIY plates can handle 1 gallon. I also have one from Brewers Hardware that handled 1 gallon no problem.

 

[malc]

We use this one in our hs lab. It works pretty well for everything i have ever done with it. Also incorporates a hot plate.
http://labscientificequipments.com/magnetic-stirrer-with-hot-plate-deluxe-6877.html

 

[Boerderij_Kabouter]

DIY plates can handle 1 gallon. I also have one from Brewers Hardware that handled 1 gallon no problem.

1g no problem. I haven't tested anything larger though. I'll try tonight

 

[JSomps6]

not sure how big this one can go, but heard good things about them...

http://www.stirstarters.com/

 

[doggage]

If you make it well, even a simple computer fan setup can handle 1 gallon. I've made starters in one-gallon jugs and they worked great. Just make sure when you make it that you use two magnets and have them spaced/balanced perfectly and one facing up and one down. The stirstarters.com site has a great tip on building them (use piece of PVC pipe to center everything up).

 

[haplo]

not sure how big this one can go, but heard good things about them...

http://www.stirstarters.com/

I just got mine from stirstarters(actually from rebelbrewer.com) and it works pretty dang good. I don't have anything big enough to test a gallon, but their site has pictures of a 5 L flask on the stir starter, so I imagine it could. The DIY instructions they have look pretty good, too.