Measurement Range:Ethylene Glycol (v/v):0.0―60.0%,Ethylene Glycol (℃):(0.0)―(-51.0)℃ ,Propylene Glycol (v/v):0.0―70.0%,Propylene Glycol (℃):(0.0)―(-60.0)℃ User-Friendly Design: Easy-to-read digital display and intuitive controls make it simple to use for professionals and DIY enthusiasts alike. Versatile Application: Suitable for various automotive, industrial, and marine applications, offering versatility and convenience. Durable Construction: Built with high-quality materials, this refractometer is sturdy and reliable for long-term use in demanding environments. Portable and Compact: Compact design and lightweight construction make it convenient to carry and use wherever you need it. The antifreeze digital refractometers are particularly suitable for the measurement and determination of AdBlue, glycol concentration (ethylene (EG) and propylene (PG)), battery fluid (BF), urea, the freezing point of fountain solution (CW). Furthermore these models are suitable for the measurement of thermal exchange systems. The main scope of applications is as follows: ①automotive industry:Car-workshops and producers;②chemical industry;③ solar industry: antifreeze monitoring;④geothermal industry: brine-concentration-measurement for ground heat;⑤forestry/lumbermen.