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Kern ORA Series Analogue Refractometers Kern ORA 4RR, The Kern ORA 4RR refractometer measures the concentration of solutions by measuring their refractive index. It has a universal field of application, but is particularly suitable for applications which require an extra large measuring range.The Kern ORA 4RR is a universal, maintenance free analogue manual refractometer. Its practical and robust design means that it can be used simply, efficiently and repeatedly in a production environment. The built in scale has been specially developed, precisely calculated and has very thin, clear graduation lines. The refractometer is fitted with an eyepiece that is adjustable to match the individuals' eyesight. Kern ORA 4RR Analogue Refractometer RI 1440 1520
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