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$Kern® Popular Portable Handheld Refractometer, Measurement of Sugar and Salt, Compact Size<br>With Wide Application Scopes, 휴대용 굴절계, 당도 및 염도 측정$ $Kern® Popular Portable Handheld Refractometer, Measurement of Sugar and Salt, Compact Size<br>With Wide Application Scopes, 휴대용 굴절계, 당도 및 염도 측정$