The J457 Laboratory Refractometer, Simple to Operate Without Sacrificing Accuracy or Capabilities. The Rudolph J457 can be configured with a Load and Go Measurement feature for your routine ...
The Rudolph J257 Refractometer offers 1 pt, 2 pt, or a full multi-point calibration. Calibration can be done at 20°C, 25°C or any user selectable temperature within the available range.
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