Model
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black
R9500
Brix Refractometer
Instruction
Manual
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black
Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Specifications
Measuring Range: 0 - 32% Brix
Minimum Scale Division: 0.2%
Dimensions: 30 x 40 x 170mm (1 x 1.5 x 6.5”)
Weight: 200g (7 oz)
Includes: Cleaning Cloth, Suction Tube, Screw Driver
Instrument Description
1. Prism
2. Cover Plate
3. Correcting Screw
4. Mirror Tube
5. Eyepiece (Adjusting ring of diopter)
Operating Instructions
1. Aim the front end of the refractometer towards the direction of a bright light
and adjust the Eyepiece until the reticule is clearly seen.
2. Open the Cover Plate and clean the surface of the Prism with the included
Cleaning Cloth.
3. Apply 1 - 2 drops of measuring solution, close the Cover Plate and press
lightly. Read the corresponding scale of light and dark boundary. The reading
is the Brix of the measured solution.
4. After measuring clean the measured solution off the Prism and Cover Plate
with a moist cotton cloth. Allow to air dry before storing.
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black
Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Calibration
1. Open the cover plate and place 2-3 drops of distilled water onto the prism
surface, close the cover plate, press lightly and ensure the water spreads
evenly across the whole surface area without air bubbles or dry sections.
(wait 30 seconds until the water adjusts to ambient temperature)
2. Hold towards light source and look into the eyepiece, if the boundary line
between the upper blue eld and the lower white eld is not located exactly
on the 0°C waterline, adjust the correcting screw until both lines meet.
3. Wipe the water from the prism with clean dry cloth and replace the rubber
correcting screw cover.
NOTE: under normal operating conditions the calibration only needs to be checked
periodically.
Temperature Compensation for Sucrose Solution
To compensate the reading for temperature make the calculation according to the
chart below. Reference Temperature is set at 20°C.
Quality Fraction %
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
°C
0.52 0.58 0.59 0.61 0.64 0.67 0.69 0.71 0.72 0.74 0.74 0.74 0.75 0.76 0.77 - - -
10
0.48 0.51 0.54 0.55 0.58 0.61 0.63 0.65 0.65 0.64 0.67 0.67 0.68 0.68 0.69 - - -
11
0.44 0.47 0.49 0.50 0.52 0.55 0.57 0.58 0.58 0.60 0.60 0.60 0.60 0.61 0.61 - - -
12
0.39 0.42 0.43 0.44 0.45 0.49 0.50 0.51 0.51 0.53 0.53 0.53 0.53 0.53 0.53 - - -
13
0.35 0.37 0.38 0.39 0.40 0.42 0.43 0.44 0.44 0.45 0.45 0.45 0.45 0.45 0.46 - - -
14
0.29 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.37 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.37 0.37
15
0.24 0.25 0.26 0.27 0.28 0.28 0.29 0.30 0.30 0.31 0.31 0.31 0.31 0.31 0.31 0.30 0.30 0.30
16
0.18 0.19 0.20 0.20 0.21 0.21 0.22 0.22 0.23 0.23 0.23 0.23 0.23 0.23 0.23 0.23 0.23 0.33
17
0.12 0.13 0.13 0.14 0.14 0.14 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15
18
0.06 0.06 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.07
19
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
°C
0.06 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.07
21
0.13 0.14 0.14 0.14 0.14 0.15 0.15 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.15 0.15 0.15 0.15
22
0.20 0.21 0.21 0.22 0.22 0.23 0.23 0.23 0.23 0.24 0.24 0.24 0.24 0.23 0.23 0.23 0.23 0.22
23
0.27 0.28 0.20 0.29 0.30 0.30 0.31 0.31 0.31 0.32 0.32 0.32 0.32 0.31 0.31 0.31 0.30 0.30
24
0.34 0.35 0.36 0.37 0.38 0.38 0.38 0.39 0.40 0.40 0.40 0.40 0.40 0.39 0.39 0.39 0.38 0.37
25
0.42 0.43 0.44 0.45 0.46 0.35 0.47 0.47 0.47 0.48 0.48 0.48 0.48 0.47 0.47 0.46 0.46 0.45
26
0.50 0.51 0.52 0.53 0.54 0.55 0.55 0.56 0.56 0.56 0.56 0.56 0.56 0.55 0.55 0.54 0.53 0.52
27
28
29
30
0.58 0.59 0.60 0.61 0.62 0.63 0.64 0.64 0.64 0.65 0.65 0.64 0.64 0.64 0.63 0.62 0.61 0.60
0.66 0.67 0.68 0.69 0.70 0.71 0.72 0.73 0.74 0.73 0.73 0.73 0.72 0.72 0.71 0.70 0.69 0.68
0.74 0.75 0.77 0.78 0.79 0.80 0.81 0.81 0.81 0.82 0.81 0.81 0.81 0.80 0.79 0.78 0.77 0.75
Subtract from measured value
Add to the measured value
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Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black
Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Maintenance
1. If the ambient temperature is not within the automatic temperature
compensation range (10 - 30°C) the instrument must be calibrated before
testing commences.
2. The prism must be cleaned thoroughly with a soft, clean damp cloth after
each use - failure to do so will result in inaccurate readings and possible
long term
damage.
3. The instrument must be kept in a dry clean environment to prevent
condensation forming on the optical components.
4. If used in accordance with the instructions and all warning are followed -
the optical performance will remain constant and the instrument will give
many years of reliable service.
Warning
1. DO NOT IMMERSE IN OR CLEAN WITH RUNNING WATER
2. THIS TOOL IS A PRECISION OPTICAL INSTRUMENT, IT REQUIRES
CAREFUL HANDLING and STORAGE
3. DO NOT DROP OR SUBJECT TO SHOCK AS DAMAGE MAY RESULT TO
THE MIRROR TUBE and OPTICAL COMPONENTS
4. DO NOT SCRATCH OR ATTEMPT TO MEASURE CORROSIVE CHEMICALS
AS DAMAGE MAY OCCUR TO THE PRISM’S COATING
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