Portable Refractometer
The Rudolph Research Analytical J27 hand held refractometer for laboratory quality measurements wherever you are
Laboratory accuracy wherever you measure
Temperature controlled portable refractometer
Up to 8 hours measurement time between charges
Superior accuracy to temperature corrected refractometers
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.
Temperature Controlled Measurements at 20 and 25°C
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.
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.
Try Before You Buy
The J27 is available for a demonstration or a short term trial.
Request Information
Temperature Controlled Measurements at 20 and 25°C
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.
High Durability Industrial Sapphire Prism
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.
User friendly GUI and Bright LED, Touch Screen Display
The easy to use interface with a brightly lit 7 inch (178mm) touch screen makes this the most user friendly Refractometer on the market today. The interface is a bright, LED touchscreen. No more difficulties reading measurements in very bright or dark environments in the warehouse or field.
Portability and Flexibility
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.
Laboratory Accuracy Everywhere You Need to Measure
Most handheld refractometers only provide for 2 or 3 decimal place accuracy and results are prone to drift. By combining laboratory level measurement module design and true Peltier temperature control the J27 provides accuracy to the 4th decimal place. Laboratory accuracy in the field eliminates rechecking of materials in the lab allowing users to test right in the field, on the receiving dock, or in a formulations area. Materials are measured for a reason, so why settle for just 2 or 3 decimal place accuracy when you can have steady and reliable 4 decimal place accuracy.
Flexible Method Management
Factory installed measurement methods and scales cover a wide group of industries and applications. The J27 is factory configured with over 20 methods and concentration scales which include RI, Brix, Urine SG, and more. Users can create measurement methods and store any scale they wish.
Food and Beverage Applications
- Seed Oils
- Edible Oils
- Candy
- Syrups
- Soups
- Milk
- Teas
- Juices
- HFCS
- Soft Drinks
- Sauces
- Confections
- Jellies
- Fruit products
- Soybean Oil
- Sodas
- Jams
- Starch
- Coffee Extracts
- Juice concentrates
- Vegetable Products
Market Specific Scales
- Urine Specific Gravity
- Fuel System Icing Inhibitor
- Ethylene Glycol / Coolant
- Alcohol
- Nitric Acid
- Coffee
- UAN Fertilizer
- Ethanol
- Formaldehyde
- Glycerol
- Methanol
- Potassium Chloride
- H2O2
- Propylene Glycol
- Propanol
- Baume
- Calcium Chloride
- Urea
- Sodium Chloride
Download Literature
Specification
Measurement Range: RI 1.3 -1.7, Brix 0-100
Accuracy: RI ±0.0001, Brix ±0.05
Repeatability: RI ±0.0001, Brix ±0.05
Resolution: RI 0.0001 – Brix 0.01
Temperature Control: 20 or 25 °C
Measurement Scales: Refractive Index (nD), Brix (% Sucrose)(% RDS)
% Concentration Scales: Unlimited
Ambient Temperature Limit: 0 to 35°C
Sample Dish: Easy clean, small volume
EP Cover: Standard
Prism: Synthetic Sapphire
Operating System: Android OS
Measurement Time: User configurable, can be less than 5 seconds
Display: Bright, backlit 7” touch screen
Data Storage: Internal storage holds up to 3,000 measurements
Communication Interfaces: USB-C, WiFi, Bluetooth®, Manual Entry, RFID, and barcode reader for entering sample IDs
Printing: Wireless
Internal Memory: Up to 3,000 Measurements
Power Consumption: 2 hours charging provides up to 4 hours of measurements in heavy usage or 8 hours of normal use
Dimensions: 18.49 cm (L) x 12.27 cm (W) x 34.52 cm (H)
Weight: 1.5 kg