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Refractometers
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Hand Refractometers, A. KRÜSS
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ABBE-Refractometers, A. KRÜSS
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Digital Hand Refractometers, A. KRÜSS
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Digital Refractometers Series 6000, A. KRÜSS
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Automatic Critical-angle Refractometer of ATR-TOUCH Series, SCHMIDT & HAENSCH
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Process Refractometers, A. KRÜSS