Magnetic Stirrer Hot Plate w/Stir Bar,100-2000rpm Magnetic Hotplate Stirrer, 180W Heating Power Hot Plate Stirrer, Max 520℉ Hot Plate with Magnetic Stirrer

Received and tested. All works as described. Heat pad did not make it to 500 degrees but did go 488 which is no big deal to me. With a non-viscous liquid such as water the spinner does not go slow enough to prevent cavitation. I can turn it down all the way and a fraction more it cuts off. But at the lowest point prior to cut off it spins fast enough to pull in an occasional micro bubble. I don't think this would happen once I added a foreign material but would be nice if it had a little mor control at low speed.

Love this hot plate/stirrer! It stirs and heats, which I use all the time for science demos in my classroom. And the price is well within my budget—much cheaper than what I could get in a science classroom supply catalog!

Well constructed, clean, no BS, cheap, sturdy little unit. And the magnetic stir feature is well tuned and works well, which is something I was worried about. My only complaint is the heat, it's not very powerful at all. So much so that I doubt it's hitting the claimed wattage output.I've had 300-200mL of tap water in a 500mL Erlenmeyer flask on this for about the last hour or two with very light stirring and full heat and I'm only barely getting to boiling. It's certainly not a powerful, rolling, foaming, kind of boil though. Outlet can run a 1500w space heater without problems, so it's gotta be this things heat element.So, it's maybe good for extremely small volumes, low power organic synth, or getting organic solvents boiling. I could see this being AWESOME for reactions that need a constant, low heat for ages. But it's not great for anything more power demanding. You're certainly not going to dehydrate sulfuric acid or distill mercury with this.I may return, then again, I may try and remove some length of the heater wire to up power. I could also set it aside for the above mentioned reasons, since it would be the perfect tool for that purpose.

Better than advertised! Works perfectly!

It arrived, packaged well. I tested it with a 500 ml beaker full of cold water, with the stirring on about halfway, and slowly increased the temperature over time. The heating and stirring work well. The attaching arm could be a bit better, but for the price and getting the job done, it's a great item.

Stirring broke during the first use. Works well for less than 1 hour. Noticed it was stirring slower after 10 minutes and eventually even the slower stirring setting was slowing down. Temperature control is non-existent for a fractional distillation it was impossible to control the rate liquid was coming over. Plate is very small and would be unstable for most beakers and flasks larger than 1L. I haven't tested maximum heat (probably will break it too like max stirring did). It comes with a thermometer holder with a plastic holder so flimsy it could easily snap by being bumped. Released annoying and probably toxic burning plastic smell while stirring.

I bought this for my hobbies needs and was surprised how well it works. It gets quite hot and can make awesome hot chocolate for the grandkids. They enjoy doing science projects with grandpa. Next, I plan to take over the world! "Insert evil laughter here. . ."

It’s a decent piece of equipment, the magnetic stirrer works great and the heat plate works ok.The heat plate has to be on a pretty decent way to start heating and it heats up very fast, I bought a temp gun to monitor it so I’d have more accuracy. The lowest I could get it was like 175f before it would stop heating all together.