Sper scientific 300001 Manuale utente

SUGAR / BRIX

REFRACTOMETER

300001, 300002

INSTRUCTION MANUAL

SPER

SCIENTIFIC

- 2-

CONTENTS

Introduction ............................................... 2

Description ................................................ 2

Operating Procedures ............................... 3

Precautions ............................................... 4

Specifications............................................ 4

Warranty ................................................... 4

Introduction: Your portable refractometer is a

precision optical instrument designed to measure

the concentration of sugar in aqueous solutions.

It utilizes a Brix scale that is accurate and easy to

read. It is excellent for quality assurance, proc-

ess control requirements, and research. Refrac-

tometers operate on the principle that as the con-

centration or density of a solution increases, its

refractive index changes proportionately. The re-

fractive angle measured by your refractometer

registers on the scale. The larger the concentra-

tion of sugar in solution, the higher the reading on

the scale.

Description:

Prism (1)

Calibration screw (2)

Cover Plate (3)

Barrel (4)

Eyepiece with focus ring (5)

- 3-

Operating Procedures

1. With the COVER PLATE open, clean the PRISM

with a soft cloth to avoid scratching the surfaces.

2. Aim the refractometer toward a light source and

rotate the EYEPIECE to obtain the clearest focus.

3. Adjustment of the null (reference point):

A. Open the COVER PLATE.

B. Apply a few drops of pure distilled water onto

the PRISM platform.

C. Close the COVER 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 the cover.

5. Place a few drops of the test solution on the prism

and close the COVER PLATE so the solution

spreads evenly on the prism.

6. Aim the front of the refractometer towards the light

source and focus the eyepiece on the boundary

line of the light and dark hemispheres.

7. The boundary line indicates the concentration of

sugar in the test sample.

15% Sample (300001) 43% Sample (300002)

8. After use, clean prisms with a cloth and remove

any residue.

9. The temperature of the null reference liquid should

be at the same temperature as the sample solu-

tion. For variations in temperature the null point

should be adjusted once every 30 minutes.

-60

-50

-40

-30

55-

45-

35-

——

—— 25

——

—— 15

——

—— 5

——

—— 30

——

—–-

——

—— 20

——

—— 10

——

—— 0

- 4-

Rev. 08/31/04

Precautions

Never submerge the unit, and do not let liquid to seep

into the unit’s body. Clean the refractometer after each

use with a soft cotton cloth. Do not scratch surface of

the prisms. Store in a dry, clean, and non-corrosive

environment. Avoid strong shocks.

Specifications 300001 3000002

Range 0-32% 28-62%

Resolution 0.2%

Accuracy

Size 6 3/4” x 1 1/2"

(171 x 38 mm)

6 1/4” x 1 1/2"

(159 x 38 mm)

Weight 3.1 oz. (89 gr.) 3.2 oz. (90 gr.)

Accessories Screwdriver, Carrying Case, Trans-

fer Pipette, Distilled Water, Instruc-

tion Manual, Registration Card.

±0.2%

WARRANTY

Sper Scientific warrants this product against defects

in materials and workmanship for a period of five (5)

years 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 damage resulting from

accident, misuse, or abuse of the product. To obtain

warranty service, ship the unit postage prepaid to:

SPER SCIENTIFIC LTD,

7720 E. Redfield Suite 7

Scottsdale, AZ 85260

WWW.SPERSCIENTIFIC.COM

[email protected]

Please Note: The defective unit must be accompanied

by a description of the problem and your return

address. Register your product online or return your

warranty card within ten (10) days of purchase.

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