Hanna Instruments HI 190M-1 Magnetic Mini-Stirrer with Speedsafe, 110/115 V Power Supply

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Price: $72.67 $72.00   

Product Feature

• HI 190M-1 magnetic mini stirrer with magnetic mini-stir bar, and built-in Speedsafe speed limiter control, not to exceed 1,000 revolutions per minute (rpm), even when sample container is removed
• Unit speed range of 100 to 1,000 rpm, and 1 liter (.26 gallons) maximum stirring capacity
• Overall dimensions are 45 x 120 x 120 mm/1.8 x 4.8 x 4.8 inches (H x W x D), stir bar is 25 x 7 mm/ 0.98 x 0.28 inches (L x W), and the instrument weighs 640g (1.4 lb.)
• Comes with a plastic, chemical-resistant [acrylonitrile butadiene styrene (ABS)] cover
• Meets International Organization for Standardization (ISO) 9001 standards, and comes with a one-year limited warranty

Product Description

The Hanna Instruments HI 190M-1 is a magnetic mini stirrer that comes with a magnetic mini-stir bar, and has an internal Speedsafe control mechanism to assure maximum speed of no more than 1,000 revolutions per minute (rpm), even when the sample container is removed. Speed range of the unit is 100 to 1,000 rpm, and maximum stirring capacity is 1 liter (.26 gallons). The device comes with a plastic, chemical-resistant acrylonitrile butadiene styrene (ABS) cover, and works with a 110/115V power supply. Overall dimensions are 45 x 120 x 120 mm/1.8 x 4.8 x 4.8 inches (H x W x D). The stir bar is 25 x 7 mm/ 0.98 x 0.28 inches (L x W), and the instrument weighs 640g (1.4 lb.). The stirrer comes with a one-year limited warranty. This magnetic stirrer is used by researchers, professionals, and hobbyists to stir a variety of liquids and solutions in chemistry, food and beverage, pulp and paper, lab, and home applications.

Researchers, professionals and hobbyists use a magnetic mini stirrer to stir a variety of liquids and solutions in chemistry, food and beverage, pulp and paper, lab, and home applications. Magnetic stirrers have a rotating magnetic field that causes a stir bar, immersed in liquid, to spin and stir the liquid. A magnetic stirrer is quieter, and more efficient than a motorized stirrer, and has no moving external parts that could break or wear out. Because of its small size, a stirring bar is more easily cleaned and sterilized than manual stirring devices, and does not require lubricants which can contaminate the reaction vessel and the product.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) 9001 standards.

Hanna Instruments HI 190M-1 Magnetic Mini-Stirrer with Speedsafe, 110/115 V Power Supply Review

The ad doesn't tell you that it comes with a (1" x 3/8") Teflon-coated stirring bar. I was going to order some from Amazon but the shipping was several times the cost of the stirring bar, so I ordered from Cole-Parmer for less. Then I found I didn't really need to order any, but I am glad I got slightly larger ones anyway. Also, this is a small stirrer--look at the beaker that is on it (500-mL?). In fact, the box says "Mini stirrer," though the ad does not mention this. But it is working very well for my purpose, which is dissolving shellac in alcohol for classical guitar finishing by French polishing. Beware that the tracking information provided by Amazon (and I am NOT talking about the estimated delivery date) is meaningless: They may say it has been delivered even if it has not and their customer-service people will just keep telling you that the estimated delivery time is only approximate.

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