Slendor Magnetic Stirrer SH-2 Hot Plate Mixer Max 520℉ Lab Hotplate Stirrer 2000 RPM Stir Plate with Thermometer, Stir Bar and Support Stand

Did I ever like this hot plate? No. I'm used to working on Corning units in professional labs that have chemical resistance, precise temp control, 550°C max temp, powerful incremental stirring, and LCD display.This unit has none of these things, and is quite frustrating to use.To start, the knobs mean basically nothing. The heating element is only slightly warm until you crank it to max at which point its ripping hot. The stirring is only slightly more incremental, and quite shockingly weak as hot plates go. It also developed an issue early on where I had to fiddle with the knobs for like 3 minutes to get it to actually start heating at all.The hot plate surface has very minimal chemical resistance, and was permanently discolored by 2M HCl. It also happens to be designed in a way that's very difficult to clean/maintenance.AND all 4 little rubber feet melted from the heat of the hot plate itself within a month.Despite all that, this little unit lasted 7 whole months of very constant hobby use, which exceeded my initial expectations. It probably could have lasted longer but a beaker of boiling piranha solution spilled all over it.. which finally killed it for good.That said, I became quite fond of this little thing over the months along with all its annoying quirks, and I admit I'll miss it. At the end of the day the low cost helps with the barrier of entry into hobby chemistry, and it always (eventually) got the job done. I highly recommend this unit if you want to get into hobby chemistry, but aren't sure how long the hobby is going to last.

This is a perfect budget stirrer hotplate, it will get the job done and done and done and done. I've put mine through its paces, and it seems no worse for wear! I would advise plugging this into a cheap wattage meter plug if you care about repeatability, though. Reading the input wattage can be MUCH more reproduceable than relying on the dial, especially in lower temperature ranges. The amount of dial-turn from 0 watts to 90 watts is quite small, and the give on the dial makes consistency difficult. That said, if you need a temperature controlled hotplate, this isn't that - so a bit of a moot point! It does what it's supposed to, very well, for a good price.

Gotta watch the heat, real touchy. Sometimes will be stable, sometimes manic.

This is great

This stirrer does NOT have heat control except on and off. There’s a resistor knob to turn the heat up and down but it’s just there for show.I contacted the seller and they admitted that it has no heat control so once it’s on the heat plate turns on full strength and burns what you are mixing.I’d stay away from this product and the seller as well. Fraudulent postings need to start being reported.Feb 17, 2025 5:56 PMDear Customer, Sorry for the bad shopping experience. The sh-2 model hot plate mixer can only heat or not heat, and cannot maintain a constant temperature. If you want to return or exchange the product, you can contact Amazon customer service. Thanks for your understanding. Best Regards,

Great design!! Great little stirrer! 2000rpm would be better, but it works. The hot plate is either on or off, there is no adjustment to it!! Also the plate seems to not be flat and have somewhat of a curve to it making things difficult!Overall it’s not a bad thing for someone just starting out, but for experienced people it’s honestly not worth it… better off spending 150+ for a nice one.Reached out to them due to smoking and smell issues and they refunded the money for it due to safety concerns!!Also the thermometer didn’t work.It’d get a high rating if it wasn’t for the unlevel plate and no temp control!! Other than that it’s a slim nice little product! As long as it doesn’t start smoking!!

So I bargain shopped for some stuff to teach my kids some chemistry at home and wound up with this little 180w hot plate and a comically large ehrlenmeyer flask… ended up running this full blast with stirring for 72hrs straight to simmer something down and it worked great!

Works great! Does what it's meant to do.