Portable Refractometer

The J27 is the new benchmark for portable hand held refractometers. The J27 is entirely untethered yet overcomes the compromises in performance and accuracy usually found in hand held instruments. Now you can measure anywhere with laboratory level accuracy.

The weakness of most hand held refractometers is they do not control temperature. Refractometer measurements are often highly sensitive to drifting results because mathematically correcting for temperature alone does not work well when the ambient temperature is changing. Only precise temperature control will result in the measurement accuracy many users require.

The Rudolph J27 Peltier temperature control at the prism surface allows for improved accuracy and greater stability. Precise heating and cooling ensures stable and accurate measurements at either 20 or 25°C. Select the J27 series with temperature control for precise measurements when working with samples that are very hot, very cold or are not Sucrose, Glucose or sugar based.

For example, a glycol sample must be measured with precise temperature control for an accurate measurement, temperature correction for sugar cannot be applied to non-sucrose based samples. A sample coming from a hot kettle on a production line must also be temperature controlled as temperature correction will not be accurate for a sample far from room temperature.

Synthetic sapphire prisms have similar hardness to diamond and can be cleaned with a paper towel. This makes sample cleaning fast and easy. Regardless of an instrument’s specified accuracy, a refractometer’s real-world performance depends on how well the instrument is cleaned between samples.

The J27 hand held refractometer is powered by a Lithium-Ion battery that is easily recharged, so it’s ready to go everywhere you need to make measurements. The battery can be charged in approximately 2 hours providing up to 4 hours of constant measurements under heavy usage or 8 hours of normal usage.