Polarimeters

High linearity

-          The Propol is an automatic polarimeter with an extremely high resolution of 0.0001° Optical Rotation using an unique measuring principle: Magneto-optical compensation by Faraday effect.

-          The linearity of the Optical Rotation and concentration scales is better than 0.05 %

-          Instrument temperature error close to zero

-          Measurement scales for Optical Rotation, %Sucrose, %Glucose, °Z International Sugar Scale (ICUMSA) and three user-definable concentration scales

Economical and environmentally friendly

-          No mechanically moved parts means no wear

-          Enables analysis of extremely dark-colored samples prepared without lead

-          Measures either individual samples or continuously, e.g. in the waste water of a sugar refinery

Small sample volume required

-          Hitherto, the use of automatic polarimeters for concentration measurements of optically active substances has been limited to sample volumes in the mL range.

-      The high resolution of the Propol allows to measure samples even in the μL range either as individual samples or continuously, e.g. in the eluate of a HPLC.

Principle of operation	Self-balancing polarimeter with magneto-optical compensation by Faraday effect
Measuring ranges	· °Optical Rotation, range ±6°, resolution 0.0001°, 0.001°, or 0.01°, menu-selectable · User-definable concentration ranges: linear, standard or polynomial scales · % Sucrose, range 0-23 % (g/100 cm3) with 40 mm cell, resolution 0.001 % · % Glucose, range 0-26 % (g/100 cm3) with 40 mm cell, resolution 0.001 % · °Z International Sugar Scale, ranges with 40 mm cell: ±86 °Z (standard) or -50 °Z to +120 °Z (sugar industry model), resolution 0.01 °Z
Sample temperature display	0-99 °C at 0.1 °C resolution. Sample cell with built-in Pt 100 temperature sensor, or a dipping probe required
Display	Green vacuum fluorescence display
Keyboard	Water-proof rubber membrane type with numeric key array
Automatic gain control	Compensates light attenuation up to an optical density of 4
Calibration and adjustment	Menu-guided calibration by Certified Quartz Control Standards
Calendar/clock functions	Battery-buffered quartz clock with date and time
Interfaces	RS-232C serial port, analogue output 0-10 V or 5 ±5 V
Light source	Tungsten-halogen lamp, 6 V, 10 W, average life 5000 h
Optical wavelength	589 nm (standard) or 546 nm (optional)
Sample cells	Various types from 2.5 to 90 mm length, material stainless steel or all glass, e.g. special models for HPLC applications
Integration time	User-selectable from 1-99 s, defines the number of measurements averaged at each display refresh cycle. The measuring rate is 14 measurements/s
Measuring unit	Waterproof cast metal housing, dimensions 550 x 130 x 215 mm (L x W x H), weight 17 kg
Display unit	Bench top housing of light metal, dimensions 470 x 160 x 340 mm (L x W x H), weight 7 kg
Connecting cable	Between measuring unit and display unit, length 2.5 m
Power requirements	Self-adapting to any mains voltage of 100/120 VAC or 200/240 VAC nominal +10 %/-15 %, 45-65 Hz