Vevor 1000ml Lab Electric Heating Mantle Sleeves Magnetic Stirrer 500W Thermost Heater

This is easily the best and well built heating mantle I have ever used. The Stir setting is powerful enough to maintain mixing through a hydrazine reaction, even as the precipitant thickens. The Heating mantle also works well, heading the glass as described. if only their customer service worked as well as this heating mantle did. Also, if they showed my 1 star reviews that would be good too. But even this one will most likely be removed once they see it, or even if it gets posted. I've actually taken a short video of this one being posted after the one star one for my report to the SEC for their lack of honoring their warranty that is given with ever item. So good!!!

This thing is pretty large 8.5\" tall, 10\" diameter. It works well. I distilled some water with it with no problem although the rheostat was ~3/4 to the end so it might only go to 130 degC or so. Not sure how high it would go, that is just an impression. Anyway it works as described.

You can use 50 ml to 250 ml ernylmer flask I dont got nothing else to say. 123456789 1234567 there is a max character requirement.

This is a good little unit. It was quickly replaced by Vevor customer service when a voltage regulator failed in the first order. Just one of those things. I really like this mantle.

I like the mantle for vacuum distillations where temps do not need to be very high. I do not believe this mantle will heat adequately for temperatures above 100C. It might, but we have not had to go that high or use open or water-based distillations. The stirring is very handy and the price was great, since we got it on special price.

High quality materials, doesnt rust, and maintains a solid grip ok glassware while latched tightly to the stand itself. Its a crazy low price!

I like that this is a proper heating mantle. No more oil baths or heat element sunk into sand for me! The problem is the stirring, it's not properly centered into the mantle. Furthermore, the rotor magnet isn't very strong. These problems, combined with the fact that my magnetic stir rods are off center, makes it impossible for things to stay synced at anything but idle pace. Other than that it's a solid performing unit. It's a little larger than I was expecting though. My 1L round bottom flask has about one and a half inches of space all around it. Could be that my flask is on the small side for 1L, could be that it's by design. I'd prefer a "fit like a glove" sizing, but I guess that's unlikely, and I keep getting told that it's OK anyway. Whatever, it's definitely an upgrade from what I had, but I feel like I could/should have spent a little more on a better unit.Edit: I discovered today that at least part of the problem was that I wasn't using the proper egg shaped stir bars. So I've added a star. After solving that problem, I set out to solve the off center stir problem. Fortunately there are just 3 screws on the bottom that hold the thing together.First thing I found was that the two magnets are being held in place with a piece of ferromagnetic material bridging across them. This created a "magnetic short circuit" of sorts, significantly reducing the "reach" of the stir mechanism's magnet. I replaced this tiny piece with a similar shaped piece of FR4 circuit board. Hard to tell how much that helped, but it couldn't have hurt.Second. Indeed, the hole that was cut for the stir motor was visibly off center from the rest of the device. nothing I could do about this existing hole, but I could do something about how the motor sat in it. I loosened the screws holding down the stir motor then cocked the motor as hard toward the center as I could manage, and while holding, tightened the whole thing down again. After that I tweaked the motor bracket some to make it even

very nice unit includes stirring bead.

Exactly what I needed for my ecology class to complete my lab set up for distilling corn into ethanol gas

This product arrived quickly and works exactly as described and as I expected. I am using it for an ethanol extraction via a Soxhlet process for vanillin extraction and I am very happy with the heating mantle. I would highly recommend this unit. -A.G.