Sper scientific 300079 Manuale utente

Refractometer Instruction Manual

PRECAUTIONS

Never submerge the unit, and do not let liquid seep into the unit’s body. Clean the refrac-

tometer after each use with a soft cotton cloth. Do not scratch surface of the prism. Store

in a dry, clean, and non-corrosive environment. Avoid strong impacts.

OPERATING PROCEDURE

1. With the Daylight Plate open, clean the Prism with a soft cloth to avoid scratching the

surface.

2. Aim the refractometer toward a light source and rotate the Eyepiece to obtain the

clearest focus.

3. Zero Point Calibration:

A. Open the Daylight Plate.

B. Apply a few drops of the of distilled water onto the Prism platform.

C. Close the Daylight Plate.

D. Turn the Calibration Screw until the dark and light boundary line coincides with the

bottom line of the scale.

4. Carefully dry the prism platform and Daylight Plate.

5. Place a few drops of the test solution on the prism and close the Daylight Plate so

the solution spreads evenly on the prism.

6. Aim the front of the refractometer towards the light source and focus the eye piece

on the boundary line.

7. The boundary line indicates the value of the test sample at 20°C.

8. After use, clean the prism with distilled water and a cloth to remove any residue.

Note: The temperature of the zero point calibration should be at the same temperature

as the test solution. For variations in temperature the zero point should be adjusted once

every 30 minutes.

SPER SCIENTIFIC

Environmental Measurement Instruments

Specications:

Model Type Range Resolution Accuracy

300070 Salinity 0-28% Salinity 0.2% Salinity ±0.2%

300071 Brix &

Salinity

0-28% Brix 0.2% Brix ±0.2%

0-32% Salinity 0.2% Salinity ±0.2%

300072 Salinity 0-100‰ ppt 1% ppt ±1%

1.000-1.070 sg 0.001 sg ±0.001 sg

300073 Brix 0-32% Brix 0.2% Brix ±0.2%

300074 Brix 28-62% Brix 0.2% Brix ±0.2%

300075 Brix 0-80% Brix 1% Brix ±1%

300076 Clinical 0-12 g/dl SP 0.2g/dl ±0.2

1.000-1.050 SG 0.0005sg ±0.005

1.330 - 1.360 nD 0.0005nD ±0.0005

300077 Automotive -60°F-32°F Ethylene 10°F ±10°F

-50°F-32°F Propylene 10°F ±10°F

1.15-1.30sg Battery 0.01sg ±0.01sg

300078 Beer 0-20% Brix 0.2% Brix 0.2%

1.000-1.085 Wort 0.001sg Wort 0.001sg

300079 Honey 58-90% Brix

38-43 Be’

10-33% Water

1% Brix

0.5 Be’

1% Water

±1%

±0.5 Be’

±1% Water

300080 Wine/Grape 0 - 25 vol%;

0-170° OE

0.2% vol

1° Oe

±0.2% vol

±1° Oe

WARRANTY

Sper Scientic warrants this product against defects in materials and workmanship for

a period of one (1) year from the date of purchase, and agrees to repair or replace any

defective unit without charge. If your model has since been discontinued, an equivalent

Sper Scientic product will be substituted if available. This warranty does not cover

probes, batteries, battery leakage, or damage resulting from accident, tampering,

misuse, or abuse of the product. Opening the refractometer to expose its internals will

void the warranty.

To obtain warranty service, contact SPER SCIENTIFIC at (480) 948-4448 or

[email protected].

purchase.

Rev. 07/24/2023

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