Refracto – reliable refractive index wherever you need it
Refracto 30PX and Refracto 30GS are compact, easy-to-use refractometers for
measurements in laboratory and production environments. Depending on the application,
these instruments can be used in two ways: Either put it on a flat surface and place a
drop of sample onto the measurement cell, or immerse the sensor directly into the fluid.
As soon as you press the measurement key, the result is displayed in the desired units on
the backlit LC-Display.
You no longer need to rely on error-prone readings of dark/bright transitions as with
optical instruments. Refracto even measures dark samples correctly. Because the refractive
index is temperature dependent, Refracto also automatically compensates the result.
The Refracto 30PX has a measuring cell made of optical glass, whereas the Refracto 30GS
has a measuring cell made of sapphire. Sapphire has a higher refractive index and a better
thermal conductivity than glass. For this reason the Refracto 30GS has an extended measuring
range and registers the sample temperature more quickly.
Specificaions
Measurement method:	Determination of the angle of total reflection of the D-line of sodium (589.3 nm)
Refractive index:	Measurement range: 1.32 – 1.50 (PX), 1.32 – 1.65 (GS), Resolution: 0.0001, Accuracy: +/-0.0005
Brix%:	Measurement range 0-85 Brix%, Resolution: 0.1 Brix% Accuracy: +/-0.2 Brix%
Temperature:	Measurement range: 10 – 40๐C, Resolution: 0.1๐C, Display: ๐C or ๐F, Ambient temperature: 5 - 35๐C
Units of measurement:	nD, nD temperature compensated, Brix%, HFCS42, HFCS55, T.A. 1990, ๐KMW (Babo), ๐Baume, ๐Oechsle (D, CH), w/w%, v/v%, spec. gravity and freezing point (๐C or ๐F) for ethanol and Nacl, w/w%, v/v% and freezing point (๐C or ๐F) for ethylene glycol and propylene glycol, w/w% and v/v% for isopropanol, user defined unit
Temperature compensation:	With user-defined temperature compensation coefficient (nD temperature compensated, user defined), or automatically (all other units). Up to 10 temperature correction coefficients can be stored in the instrument.
Calibration:	With pure water
Data memory:	For up to 1100 results (result with unit, sample identification, temperature correction coefficient, date and time)
Display:	Backlit LC-Display
Interface:	Infrared for data transfer to PC and printer (IrDA or RS232C)
Weight:	Approx. 250 g
Batteries:	2 x LR3, 1.5 V, type AAA approx. 60 hours battery life (one measurement per minute)
Materials;	Housing: PBT. Measurement cell (PX): Glass, stainless steel. Materials with sample contact (PX): Glass, stainless steel, PBT Measurement cell (GS): Sapphire, hard gold plated brass. Materials with sample contact (GS): Sapphire, gold, PBT.