refractometers, colorimeters, polarimeters, saccharimeters, saltmeters, Brix meters, refractive index such as Abbe, hand held, digital pocket and Peltier Temperature controlled refractometers


	GPR 12-70	GPR 53X	GPR 12-70X
Scales	Refractive Index (RI) Brix Temperature corrected Brix 10 user scales Temperature corrected RI	Refractive Index (RI) Brix Temperature corrected Brix 10 user scales Temperature corrected RI	Refractive Index (RI) Brix Temperature corrected Brix 10 user scales Temperature corrected RI
Range	RI 1.32 to 1.68 Brix 0 to 100%	RI 1.32 to 1.53 Brix 0 to 95%	RI 1.32 to 1.68 Brix 0 to 100%
Readability	RI 0.0001 Brix 0.1%	RI 0.00001 Brix 0.01%	RI 0.00001 Brix 0.01%
Accuracy	RI ± 0.0001 Brix ± 0.1	RI ± 0.00003 @ 1.33 Brix ± 0.02 @ 0%	RI ± 0.00005 from 1.33 to 1.45 ± 0.0001 from 1.45 to 1.68 Brix ± 0.05 from 0 to 65% ± 0.1 from 65 to 100%
Special feature	Touch button selection of normal or emulsion type samples Data Storage for up to 100 test results	Data Storage for up to 100 test results	Touch button selection of normal or emulsion type samples Data Storage for up to 100 test results
Scan time	Approximately 2 seconds	Approximately 1 second	2~6 seconds, depending on resolution

Wavelength	589 nm
Operating modes	Continuous update or single scan with user programmable delay time or single scan with automatic detection of reading stability
Display	Illuminated alphanumeric, 2 lines of 24 characters high contrast LCD with contrast control
Light source	L.E.D.
Prism material	Synthetic sapphire
Temperature	Displayed continuously to 0.1°C with sample reading calibrated to ±0.1°C at 20°C; worst case deviation in absolute accuracy over entire range 0.5°C
Thermostatic control	By use of circulating fluid, temperature range 5°C to 70°C
Controls	Set zero, print, numeric keyboard for programming functions
Outputs/inputs	2 x RS232, 1 x remote
Power requirements	86~265V AC, 47~63Hz, less than 7 watts
Dimensions and weight	Refractometer: w 235 x d 260 x h 255 mm; 8kg Power supply: w x 80 x d 160 x h 55 mm; 0.5kg
Packed weight	12kg (dimensions of pack 50 x 40 x 35 cm)