242
P
POLARIMETERS
Introduction:
PLRA-2
automatic polarimeter is the basic scientific instrument
used to measure angle of rotation, specific optical rotation of optically active
substance.
Automatic Measurement:
PLRA-2
built-in auto-controlling system. Power on
the polarimeter, the system will search for zero point automatically. You need only
put the sample tube in measuring field chamber, the polarimeter will display the
angle of rotation.
Auto-Judge Substance FDRM Levorotatory DR
Dextrorotatory
:
The polarimeter can auto-judge
compoundor form levorotatory or dextrorotatory.
If there is negative measures value, that means is
levorotatory substance, if appearing positive measures
value, it means is dextrotatory substance.
Reproducibility
:
In experiment, you need test a
sample solution three times or more to ensure the
accuracy of the measured value. You can press
[+] or [-] key and the polarimeter will test again.
The polarimeter not only can test the angle of rotation of substance and
but can calculate its purity, concentration and percentage.
PLRM-4
manual polarimeter is ideal for determining concentration levels of
samples for applications in the medical, educational, pharmaceutical, and
cosmetic industries etc.
Easy Measurement:
The polarimeter with 589.44nm monochromatic sodium
lamp. After powered on, the polarized light beam is immediately project on filter,
polarizer etc. You can view the visual fields of brightness or shade through
eyepiece. Put the sample tube in measuring field chamber. Rotate the vernier
knob again, you can view equal brightness. Read the scale from magnifier that is
measured value.
Specific Optical Rotation Measurement:
Specific optical rotation is constant of substance, you
can measure it by 100mm glass tube when temperature
of solution at 20
o
C.
Purity Measurement:
The polarimeter is ideal for
determining purity of sample. If you want to know its
purity, you need only measure its the angle of rotation
and calculate it.
Concentration Measurement
:
For some
substance of known specific optical rotation, you can
measure its the angle of rotation and calculate
concentration according to formula.
International Sugar Scale:
According to international sugar scale, put the 26
grams pure sugar in solution, The angle of rotation of solution is 34.626
o
. By the
rules, you can calculate the purity of sugar.
Introduction:
PLRS-5
semiautomatic polarimeter used to measure angle of
rotation, specific optical rotation of optically active substance. You can calculate
its purity, concentration and percentage by measured value.
Features:
Microprocessor-Based
●
The angle of
rotation is digitally displayed
●
Simple push-button
adjustment of visual fields
●
Zero indicator light
confirms accurate calibration.
Specification:
Measuring Range: -180
o
to + 180
o
●
Accuracy: ± 0.02
o
●
Light Source: Sodium lamp
●
Optical Wavelengths: 589.44nm
●
Stable Time:
5 minutes
●
Tube Length: up to 200mm
●
Power
Requirements: 220VAC/50Hz
●
Dimensions:
590(L)x255(W)x400(H)mm
●
Weight: 7kg.
Rotate the vernier knob till
the visual field to equal
brightness. (Zero point)
PLRM-4, Full-Circle Manual Polarimeter
PLRS-5, Semiautomatic Polarimeter
PLRA-2, Automatic Polarimeter
Specifications:
Measurement Range: -180
o
to +180
o
Scale Value: 1
o
Vernier: ± 0.05
o
Magnifier: 3X
Light Source: Sodium Lamp
Wavelength: 589.44nm
Tube Length: up to 200mm
Stable Time: 10 minutes
Power Requirements: 220V/50Hz
Dimensions: L500x W135x H330mm
Weight: 5kg
Specification:
Measuring Range: -45
o
to +45
o
Accuracy: ±0.02
o
Reproducibility: ± 0.01
o
Resolution: 0.005
o
Light Source: Sodium lamp
Optical Wavelengths: 589.44nm
Stable Time: 5 minutes
Tube Length: up to 200mm
Power Requirements: 220VAC/50Hz
Dimensions: 600(L)x300(W)x200(H)mm
Weight: 25kg.
PLRM-4
PLRA-2
PLRS-5