Extech Instruments Salinity Refractometer RF20. Compact size easy to operate. Automatic Temperature Compensation (ATC) from 10 to 30C. Comes with case calibration screwdriver plastic pipette calibration solution and user guide....
Extech Instruments Salinity Refractometer RF20. Compact size easy to operate. Automatic Temperature Compensation (ATC) from 10 to 30C. Comes with case calibration screwdriver plastic pipette calibration solution and user guide....
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