What device is used in the laboratory to create a low-temperature environment of -50 degrees Celsius?
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As the title suggests, what kind of equipment is used in a laboratory to create a low-temperature environment of -50 degrees Celsius? If anyone knows, please let me know. Thank you
Can liquid ammonia and propylene-based refrigerants both achieve this?
Low-temperature thermostatic bath, from -80 to 105 degrees. Selection of liquid medium: When the operating temperature is below 5 degrees, anhydrous alcohol is generally used as the liquid medium； When the operating temperature is between 5 and 80 degrees, pure water or soft water is generally used as the liquid medium ； When the operating temperature is 80–90 degrees, a 15% glycerin aqueous solution is generally used ； At a working temperature of 90–100 degrees, glycerin is generally used as the liquid medium. It’s better to visit this website and consult the manufacturer. 1. Shanghai Bilang Instrument Co., Ltd. http://www.diytrade.com/china/2/...8E%AF%E5%99%A8.html 2. Huzhou Jinbo Electronic Technology Co., Ltd. http://www.nxjb.com/product.asp This post was last edited by Canghai Yili Sha on 2009-4-14 at 20:33