Sper Scientific 300055 User Manual
8. WARRANTY
Sper Scientific warrants this product against
defects in materials and workmanship for a
period of 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 Scientific product will be substituted if
available. This warranty does not cover
probes, batteries, or damage resulting from
accident, misuse, or abuse of the product.
In order to obtain warranty service, ship the
unit postage prepaid to:
SPER SCIENTIFIC
7720 E Redfield Rd, Suite 7
Scottsdale, AZ 85260
Include a description of the problem and
your return address along with the returned
item. Return your warranty card within 10
days of purchase or register online at:
email: info@sperscientific.com
www.sperscientific.com
POCKET DIGITAL
REFRACTOMETERS
300050 ~ 300055
INSTRUCTION MANUAL
rev 03/03/09
SPER
SCIENTIFIC LTD.
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CONTENTS
1. Introduction.................................. 2
2. Panel Description ........................ 3-4
3. Notes and Precautions……………5
4. Calibration ................................... 5-6
5. Measurement .............................. 6-7
• Models with Multiple Scales..... 7-8
• Erratic Readings....................... 8-9
5. Zero Checking.............................. 9
6. Battery Replacement................... 9
7. Specifications .............................. 10-11
8. Warranty...................................... 12
1. INTRODUCTION
Our Pocket Digital Refractometers measure
Brix, salinity or other parameters with
laboratory accuracy. The digital readout
eliminates uncertainties, while the water
resistant design facilitates clean ups and
protects the electronics from moisture.
Features:
• Automatic Temperature Compensation
• Zero Calibration
• Automatic shut off
• Instantaneous reading
Be’ 28~48
Model Scale Range Res. Accuracy
7. SPECIFICATIONS (continued)
Brix 40~95%
Water 10~45%
300050
0.1% ±0.2%
300051 Brix% 0~65%
300052 Brix% 40~95%
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Salinity% 0~28%
300053 Brix% 0~95%
(14)~(-40)°F
Cleaner
Salinity ppt 0~280ppt 1ppt ±2ppt
300054
0.1°F ±2.0°F
(32)~(-50)°F
(32)~(-50)°F
Ethylene Glycol
Propylene Glycol
300055
1.000~1.500sg 0.001sg ±0.005sg
Battery
Use pure distilled water as the calibration solution for all models.
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