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Michelle T.
Reviewed in the United States on March 9, 2025
The media could not be loaded.
desjardo
Reviewed in Canada on February 7, 2025
Heat worked great but the stir dial doesn't actually turn on stir.
Ozzy
Reviewed in the United States on September 22, 2024
Be careful as the entire plate does get hot (duh, but you never know), and also make sure you pick up a set of different size stir bars that will allow you to get the right fit for the glass container you are using and the viscosity of the solvent you are using. The heat helps make the liquids less viscous, so keep an eye on your heat setting and stir bar.
Matthew
Reviewed in the United States on February 8, 2024
It's really hard to know what's going on with the temperature control. The spinning works pretty well, but you have the literal visual indicator that stirring is taking place. The light for the heating element comes on when no actual heating is taking place and it's impossible to know if it's heating or not without waiting several minutes for no heating to take place.Additionally, and bizarrely, turning the knob clockwise you can start the temperature at one minimum and then turning it counter clockwise it shuts off at a different minimum temperature. Obviously, not very good for sensitive cultures.
Carlos Contreras
Reviewed in Mexico on February 15, 2024
Excelente producto tipo laboratorioRecomendado para principiantes intermedios y pros
Daniel Vázquez Zamarripa
Reviewed in Mexico on November 18, 2024
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Dannypayne1975
Reviewed in the United States on November 11, 2024
well made, excellent functions at an even more excellent price. You will have no trouble determining if this is adequate to occupy lab space . Luv it. Oh just be sure not to spill on it while hot. It wont hurt it but it will never look as nice.
Justin
Reviewed in the United States on October 12, 2024
I use two of these for electroplating. The plates head up the chemicals to 130F in a decent amount of time when set to 100% power. As you turn the power down, I believe it just 'pulses' power less and less. That said, it does indeed turn the temp down. With a little trial/error I can eventually find a setting that'll keep my beakers at 130F solid. The speed controll for the stirrer is pretty wide range. I'm able to make it turn slow enough to avoid a vortex in small beaker...or turn it up to stupid speeds and get a vortex spattering mess. Very happy overall, which is why I have two!
CC34
Reviewed in the United States on January 31, 2024
This product lasted in our chemistry lab after daily use by multiple people for just over 3 years. After about 40 months one was no longer heating up and the other is showing signs of end of life, so we're ordering replacements. Great value. Not great control/accuracy over the heat, but you get what you pay for.
alex monge baqueiro
Reviewed in Mexico on February 12, 2023
La placa se mancha mucho
Julio Alfredo Plata Cabrera
Reviewed in Mexico on January 2, 2022
El termoagitador SH-2 es lo que realmente necesita un estudiante relacionado a la materia de química. No importa el grado en que estés es muy útil y además cumple con las expectativas. Lo recomiendo altamente. 100/100
Meezy
Reviewed in the United States on September 10, 2021
So this was new out of the box and I set it up and plugged it in. I turned the heat knob to on and adjusted it to the lowest setting and tested it with my thermometer gun. 135 F but fluctuations between 123 F and 135 F when knob is stationary. Then I went midway between the max and minimum which is almost all the way to the right and got 225 F -235 F. I detected a smell coming off the plates at this temperature. It is definitely off gassing a chemical. I cranked up to max to see how hot it tops off at. When it reached 300 F I smelled the chemical odor very strongly and then I started to see white smoke. Fearing something may be overheating I decided to kill the test. I turned the knob off and heard the click and the red led light turned off. I then went away for 30 minutes for it to cool and then reexamine the machine. When I came back and placed my hand across the top to pick it up I heard a loud sizzling sound. My thumb was seared like a steak to the plate. I grabbed my thermo gun and read 483 F. First degree burn on my thumb. I recheck the knob to make sure it is off and turn it back on and back off again. I recheck the temperature and still 483 F. I then flip the kill switch on the side to the circle which should mean open circuit. Nope it is still on 483 F. The only way to turn it off is to unplug it. The unit I received is faulty from the manufacturer straight out of the box and extremely dangerous. Thank God I came back to check on it or everything in my house would have been burned down to the ground because this surely would have caught fire within the hour.
John
Reviewed in the United States on March 12, 2021
My main issue with this unit is the method used to set temperature. I am familiar with the usual designs used for adjusting intensity of heaters, lamps and other resistive loads having designed them myself. This has the same issue that many low-cost dimmers have in that you cannot set the temperature (or intensity) to a value below a certain point. Starting at OFF, turning up the control results in nothing until a certain point is reached, then suddenly it begins to work and the heating/intensity can be finely adjusted after that point. Starting at full-ON, turning the intensity/heating down drops as expected until a point is reached, then it turns OFF abruptly.But the unit is low-cost and if you are not in the situation of having to set a specific low heat level, then it may not be an issue. I would have been happier if the threshold point were lower since I did need to have some warm heating.My second issue is that a finer thread or different alloy for the thermometer holder clamp would be nice. After crunching down on the clamp screw, the arm holding the thermometer was still not rigid enough to hold the thermometer in one place.Finally, a protection ring around the heating plate would help prevent accidental burning if a person happened to move their hand laterally across the table and touch the rim of the hot plate.But these are all 4-star features and with an evaluation system where the vendor is guaranteed one star, making this a three-star rating is reasonable to me. If I planned to use this often enough, I would pay more and get these features. Since this was for showing an on-line schooled child some cool chemistry experiments, I am happy with this unit. It does the job I wanted, has worked the 7-8 times I need it, seems to be well designed beyond the above comments and the price was right.
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