FAQ for Hand-Held refractometer-seris.


Hand-Held refractometers


Photo
Above : MASTER-α
Below : MASTER-Pα

Question

• How can I calibrate different ranges of the Refractometers?
• About the Maintenance.
• About the Brix (%) Scale.
• About the volume of the sample.
• The scale of the Analog hand-Held Refractometer is blur, and I can not see clear boundary line.
How can I do with this unit?




How can I calibrate different ranges of the Refractometers?



Please see below :

[ Hand-Held Refractometers, MASTER Series ]

  Scale Adjustment Temperature Compensation

MASTER-α series
[ α, Pα, 2α, 3α, 4α, 53α, 10α, 20α, S28α, S10α, S/Millα ]

Not Necessary

Automatic

MASTER-T series
[ 2T, 3T, 4T, 53T ]

Not Necessary as a daily

Automatic

MASTER-M, 10M, 20M, 53M, S28M, S10M, S/MillM

Measure Water at environment temperature, and adjust the scale to Brix 0.0%. (Zero Set)
Please re-do this procedure when the environment temperature changes.

MASTER-2M

Adjust the scale with 30% Sucrose Solution
(± 0.03%)

Refer to the temperature compensation table on the instruction manual.

MASTER-3M

Adjust the scale with Standard Liquid LK.
* Please refer to the instruction manual.

MASTER-4M

Adjust the scale with 50% Sucrose Solution
(± 0.05%)

MASTER-H series
[ 50H, 80H, 93H, 100H ]

Not Necessary

Automatic

MASTER-BR

Measure Water at environment temperature, and adjust the scale to 0% • 0°C. (Zero Set)
Please re-do this procedure when the environment temperature changes.

MASTER-RI

Adjust the scale with the Standard Liquid LK. * Please refer to the instruction manual.

N-8α

Measure Water at environment temperature, and adjust the scale to Brix 0.0%. (Zero Set)
Please re-do this procedure when the environment temperature changes.

AL-21α

Measure Water at environment temperature, and adjust the scale to Conc 0.0%. (Zero Set)
Please re-do this procedure when the environment temperature changes.

HHR-2N

Adjust the scale with the Standard Liquid LK.
* Please refer to the instruction manual.

Read thermometer on theunit.

MJ-1E, RS-32

Measure Water at environment temperature, and adjust the scale to Conc. 0.0%. (Zero Set)
Please re-do this procedure when the environment temperature changes.

HSR-500

Measure Water at environment temperature, and adjust the scale to Brix 0.0%. (Zero Set)
Please re-do this procedure when the environment temperature changes.

Read thermometer on theunit.

R-5000

Measure Water at environment temperature ( 20°C, and adjust the scale to nD 1.3330. (Zero Set))

[ Hand-Held Refractometers (old products) ]

  Scale Adjustment Temperature Compensation

ATC-20E

Not Necessary as a daily

Automatic

N-10E, N-20E

Measure Water at environment temperature, and adjust the scale to Brix 0.0%.(Zero Set)
Please re-do this procedure when the environment temperature changes.

S-10E, S-28E

Measure Water at environment temperature, and adjust the scale to Brix 0.0%.(Zero Set)
Please re-do this procedure when the environment temperature changes.

ATC-S/Mill-E

Not Necessary as a daily

Automatic

S/Mill-E

Measure Water at environment temperature, and adjust the scale to Salinity 0.0%. (Zero Set)
Please re-do this procedure when the environment temperature changes.

SM-20E, BR-1E

Measure Water at environment temperature, and adjust the scale to Conc. 0.0%. (Zero Set)
Please re-do this procedure when the environment temperature changes.




About the Maintenance.


• After measuring, use a lint-free tissue to wipe the sample off of the prism surface. If the sample contains oils or fat, use isopropyl alcohol and water to clean the prism surface.
• When not in use, keep the refractometer in the storage case at room temperature (20°C). Avoid storing the unit in direct sunlight or in a moist environment and do not subject the unit to strong shocks or vibrations. The ambient temperature at which you can safely store the units is between 0 and 40°C.





About the Brix (%) Scale.



All Refractometers are designed to measure the refractive index of a solutoin. The Brix scale is based on a sucrose (sugar) and water solution. However, since most samples contain substances other than sugar - such as salts, minerals and protenis - the Brix percentage repesents the total concentration of all soluble solids in the sample. For certain samples, such as cutting oils and other industrial fluids, a conversion chart from the Brix percentage to the sample's total concentration may be necessary.




About the volume of the sample.



Low viscosity samples like water need about 0.3ml to measure. Higher the viscosity, larger the sample amount will be needed. As soon as the sample spreads out completely between the daylight plate and the prism, it is about the best amount to take measurements. ATAGO supplies the "Small Volume Daylight Plate" (RE-2311-52M) for small volume sample measurements by the MASTER-Series Refractometers. (Only 1µl of sample needed.)




The scale of the Analog hand-Held Refractometer is blur, and I can not see clear boundary line. How can I do with this unit?



If the scale is blur, water or moisture might get inside of the Refractometer. Leave the unit at dry place for a few days, or use a hair dryer to take water/moisture out from the unit. (Do not use the hair dryer exceed by 50°C.) If there is dust inside, please send the unit to ATAGO (or ATAGO Distributor) for service.
For Repair Service Dept