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The Atago 4491(PAL-91S) Digital Pocket Ethylene Glycol Refractometer delivers fast, precise glycol concentration and freezing point measurements with 0.2% resolution and ±0.4% accuracy. Featuring a clear 3-digit LCD, automatic temperature compensation, and simple one-touch calibration, this compact, battery-powered device is ideal for professionals monitoring industrial coolants and antifreeze solutions.
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