INTLLAB Magnetic Stirrer Stainless Steel Magnetic Mixer with stir bar (No Heating) Max Stirring Capacity: 3000ml

I bought this for my home lab (I do a lot of yeast starters and some basic chemistry), and it’s been a total workhorse. For the price, I wasn't expecting much, but it’s surprisingly powerful. The motor is quiet—you can leave it running for 24 hours and barely hear a hum. I really like that the speed control is smooth; it doesn't just jump from "off" to "tornado." You can dial it in perfectly to get a nice vortex without the stir bar flying off and rattling around the flask (which usually happens with the cheaper plates). The surface is easy to clean and it’s compact enough that it doesn't take up much bench space. It came with a few different sized stir bars too, which was a nice bonus. If you’re tired of manually shaking jars or dealing with inconsistent mixing, this is a no-brainer. It does exactly what it’s supposed to do.

Update: After playing around with different sized stir bars I found that 25mm works better than 30mm for a standard mason jar as well as various flasks and media bottles. Either the standard cylindrical or type B with a center spin ring work well. The shorter stir bar appears to mix solutions just as well as the longer, but able to obtain faster rpm with fewer spin outs. Maybe the unit comes with a 25mm bar for a reason. Duh! I can’t attest to the magnet strength, but it works well enough for me to upgrade to 5 stars. It seems that everybody working with liquid cultures owns at least one of these. For $20 it’s hard to find a basic stir plate with better reviews. That said, my experience is mixed. The price is right, sure, but the magnets are weak. Trying to get a standard 30mm stir bar centered and spinning in a quart size Mason jar is a challenge. The bar tends to get thrown to the side and stuck in the ditch perimeter of the slightly convex interior center. If the speed is ramped up too much it’s thrown off center and back into the ditch. Once centered and spinning at a low to moderate speed, it works well enough. I plan to try stir bars with a center spin ring to see if that helps. Compared to my Lab House hot/stir plate this is far inferior. Granted the other cost 3X more. I’d give it 2-3 stars based on performance alone, but for $20 I’ll be generous with 4 stars. YMMV

Works awesome, I’ve run mine for weeks at a time with zero issues

I was disappointed with the is device when I first used it because it couldn't stir moderately viscous liquids, however, I upgraded the magnetic pellet provided with a stronger one and an now very satisfied with it.

So far, so good. I'm very happy with this purchase. It works great on my tall, 900 ml glass water bottle. The water bottle doesn't even have a completely flat bottom.

The INTLLAB Magnetic Stirrer has proven to be an exceptional tool for my laboratory needs. With a maximum stirring capacity of 3000ml, this stainless steel magnetic mixer handles large volumes effortlessly, providing consistent and reliable results every time. The unit operates smoothly without heating, making it perfect for temperature-sensitive experiments. The included stir bar is highly effective, creating a strong magnetic connection that ensures thorough mixing of all solutions. The build quality is impressive, with durable stainless steel construction that adds to its longevity and ease of cleaning. It’s also compact and lightweight, which makes it easy to move and store when not in use. Overall, the INTLLAB Magnetic Stirrer is a fantastic investment for any lab requiring efficient and precise mixing capabilities. Its performance and durability make it an indispensable tool in my lab. Highly recommended!

This works extremely well; it’s one of the cheapest models & only does 1 jar at a time but I’m extremely pleased with how well it works.

I bought two of these. I didn’t start using them until one month ago. One completely died. The light comes on but it does not spin the magnet. Now, I’m down to one and my return window is closed.

The item does not work, I was trying to buy a US head plug as mine is UK and when I got the US type A plug the return time finished so now I am left with a product that does not work

Muy útil y práctica por el tamaño. Funciona adecuadamente.

Good

Got this last week so I can't comment about durability but it's working fantastic so far. I bought this mainly for a future DIY Kalkwasser reactor (reef aquarium), but I have been using it so far to mix up chemicals including kalkwasser, 2 part alkalinity, as well as F2 fertilizer in fresh seawater for phytoplankton. The last one is probably overkill but it's neat to see this spin and get such a clean mix. It does feel well built and my future plans are to put it on a timer so it comes on for a couple of minutes every couple of hours while I dose kalkwasser. Just need to find an appropriate sized container for that. In the mean time I'm using it for anything I need mixed. I would probably recommend getting different sized stir bars, vs the one it came with but very happy with this product.

I'm sure the Stirrer does the job, but can't if it only has a US plug on the power adapter. What's the point of selling items like this in the UK if it doesn't have a UK plug. Buyer be warned.