High-Precision Digital Refractometer RA-620

Refractive Index
The ratio of the speed of light in air to the speed of light in the measured substance under sodium D-line, 20°C conditions, or the ratio of the sine of the angle of incidence to the sine of the angle of refraction when light passes from air into the measured substance.

Main Features of High-Precision Digital Refractometer RA-620:

1. High-precision 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 conversion table or polynomial for automatic compensation to the required temperature refractive index.
6. Built-in Brix conversion table. Can input refractive index and concentration conversion table or polynomial to calculate concentration.
7. Standard sample anti-volatilization cover plate to prevent the impact of volatile samples during testing.
8. Can connect to external digital densitometer and various automatic samplers for simultaneous measurement of density and refractive index.
9. Chinese operation interface, critical angle image display, high-precision measurement results, and cost-effectiveness.

Technical Parameters of High-Precision Digital Refractometer RA-620:

Measurement Range: Refractive Index: 1.32000–1.58000nD, Brix: 0.00–100.00%.
Accuracy: Refractive Index: ±0.00002nD, Brix: ±0.014% (0–85%).
Repeatability: Refractive Index: ±0.00001nD, Brix: ±0.007% (<5%), ±0.01% (≥5%).
Resolution: Refractive Index: 0.00001nD, Brix: 0.001% (<5%), 0.01% (≥5%).
Temperature Control Range: 5–75°C, built-in Peltier temperature control device.
Temperature Resolution: 0.01°C.
Light Source: LED sodium D-line (589.3nm).
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 conversion tables for automatic concentration calculation.
HFCS Dry Matter: Built-in HFCS42/HFCS55/HFCS90 high-fructose corn syrup solid content and refractive index conversion tables.
Power Supply: AC100–240V, 50/60Hz, 20W. Or external rechargeable battery.
Dimensions: 191(W) x 281(D) x 161(H) mm.
Weight: Approx. 5 kg.