Fully Automatic Refractometer RA-600

Refractometry
When light passes from one transparent medium to another, refraction occurs at the smooth interface between the two media due to the difference in the speed of light propagation in each medium. The commonly used refractive index refers to the ratio of the speed of light in air to its speed in the sample. According to the law of refraction, the refractive index is the ratio of the sine of the angle of incidence to the sine of the angle of refraction.
The refractive index of a substance changes with temperature or the wavelength of the incident light. As the temperature of the transparent substance increases, the refractive index decreases; the shorter the wavelength of the incident light, the higher the refractive index. The refractive index is denoted as ntD, where D represents the D-line of the sodium spectrum, and t is the temperature at the time of measurement.
This method uses the D-line of the sodium spectrum (589.3 nm) to measure the refractive index of the sample relative to air. Unless otherwise specified, the sample temperature is 20°C.

Fully Automatic Refractometer RA-600 Detection Standards:

GB/T 614-2021 Chemical Reagents—General Method for the Determination of Refractive Index (Automatic Digital Display Refractometer Method).
GB/T 5527-2010 Animal and Vegetable Fats and Oils—Determination of Refractive Index (Refractometer).
GB/T 6488-2022 Liquid Chemical Products—Determination of Refractive Index (Fully Automatic Refractometer).
GB/T 6504-2017 Chemical Fibers—Test Method for Oil Content (Refractive Index Method).
GB/T 10786-2022 Canned Food—Method of Inspection (Soluble Solids).
GB/T 12143-2008 General Analytical Methods for Beverages (Determination of Soluble Solids in Beverages).
GB/T 13531.7-2018 General Test Methods for Cosmetics—Determination of Refractive Index (Automatic Refractometer Method).
GB/T 14454.4-2008 Aromatic Chemicals—Determination of Refractive Index (Refractometer).
NY/T 2637-2014 Determination of Soluble Solids Content in Fruits and Vegetables—Refractometer Method (Refractometer).
YC/T 145.3-2012 Tobacco Flavorings—Determination of Refractive Index (Refractometer).
SN/T 0852-2012 Inspection Regulations for Import and Export Honey (Determination of Moisture Content).
SH/T 0724-2002 Determination of Refractive Index and Refractive Dispersion of Liquid Hydrocarbons (Automatic Refractometer).
SH/T 0205-1992 Determination of Refractive Index and Specific Dispersion of Electrical Insulating Liquids (Abbe Refractometer).
Chinese Pharmacopoeia 2020 Edition, Part IV—Refractometry.

Fully Automatic Refractometer RA-600 Main Features:

1. Digital refractometer with touch LCD screen, simultaneously displaying refractive index, Brix, and concentration.
2. Built-in Peltier fully automatic temperature control, compact design, easy operation, and fast measurement speed.
3. Uses high-brightness LED light source with long service life; measuring prism made of sapphire for wear resistance.
4. Fully automatic refractometer, compliant with GLP standards, stores measurement results, inspection, and calibration records.
5. Input refractive index and temperature reference table or polynomial for automatic compensation to the required temperature refractive index.
6. Built-in Brix conversion table. Can input refractive index and concentration reference table or polynomial for concentration conversion.
7. Standard anti-evaporation cover plate to prevent volatile samples from affecting detection.
8. Can connect to digital densitometer and multi-sample autosampler for simultaneous measurement of density and refractive index.
9. Chinese operating interface, displays critical angle image, high-precision measurement results, and cost-effectiveness.

Fully Automatic Refractometer RA-600 Technical Parameters:

Measurement Range: Refractive Index: 1.3200–1.7000 nD, Soluble Solids (Brix): 0.00–100.00%.
Accuracy: Refractive Index: ±0.0001 nD, Soluble Solids (Brix): ±0.1%.
Repeatability: Refractive Index: ±0.0001 nD, Soluble Solids (Brix): ±0.1%.
Resolution: Refractive Index: 0.0001 nD, Soluble Solids (Brix): 0.1%.
Temperature Control Range: 5–75°C (optional 5–100°C), built-in Peltier temperature control device.
Temperature Resolution: 0.1°C.
Light Source: LED sodium spectrum D-line (589.3 nm).
Prism: Sapphire.
Sample Stage: SUS316 stainless steel.
Sample Volume: 0.2 mL.
Display: 4.7-inch color backlit LCD.
Control Method: Touch screen control.
Number of Methods: 100 measurement methods.
Measurement Results: 300 test results.
Conversion: Can input 100 sets of refractive index and concentration reference tables for automatic concentration conversion.
High-Fructose Corn Syrup Solids: Built-in HFCS42/HFCS55/HFCS90 high-fructose corn syrup solids content and refractive index reference tables.
Power Supply: AC100–240V, 50/60Hz, 20W. Or external rechargeable battery.
Dimensions: 191(W) x 281(D) x 161(H) mm.
Weight: Approximately 5 kg.