Nova-Tech STX-3 User Manual

Salinity Scale
Optical Refractometer

Features

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Largest & Sharpest Display Scale Available

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Patented “Zero Ring” Requires No Additional Tools

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Durable, All-Metal Design

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Specific Gravity & PPT (‰) Scales

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Automatic Temperature Compensation

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High-Quality Optical Glass Prism

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Rubber Grip Is “Dimpled” For Simple External Cleanup

STX-3 Salinity Scale Optical Refractometer

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The STX-3 from VEE GEE is exceptionally simple to operate and provides quick, precise
measurements
aquariums, fish farms, and holding tanks.

Operation consists of placing 1 or 2 drops of sample on the prism, closing the daylight plate
over the sample, then looking through the focusable, cushioned-rubber eyepiece for the
reading.

The STX-3 features the largest, easiest-to-read scale available with clear, sharp figures, screen
shading and incredible contrast. This significantly enhances overall precision, even when
several different people use the refr actometer. The STX-3 also comes with a rubber grip on
the body, which blocks the transmission of hand heat to eliminate temperature error s.

With an automatic temperature range of 10 to 30°C, the STX-3 can be used in outdoor
environments without the need to re-zero. All measurements are automatically compensated
to 20°C. If measurement values shift, zeroing the STX-3 is ver y simple. The patented “Zero
Ring” eliminates the hassle of using a separate tool during zero calibration. Simply place a
few drops of distilled water on the prism and turn the “Zero Ring” until the scale is zeroed,
and secure the setscrew...that’s it!

The rugged construction of the STX-3 will provide years of reliable use. The optical glass
prism is mounted in an all-metal housing which allows the sample and prism to reach
temperature equilibrium quickly. The non-roll stand ensures that once the STX-3 is placed
on a table or bench top, it won’t be prone to r oll off the surface.

Go with a name you can trust for the highest level in clinical instruments...choose VEE GEE.

. Users can accurately and easily monitor the salinity level of seawat er, ponds,

Technical Specifications

Cat. No.

Measuring Range

Resolution

Accuracy

Prism
Prism Housing
Temperature Compensation
Compensated Temperature
Temperature Compensation Range
Sample Type
Sample Quantity
Zero Calibration Liquid
Custom Calibration Liquid
Dimensions
Weight

Supplied With

PPT
Specific Gravity
PPT
Specific Gravity
PPT
Specific Gravity

STX-3

43036

00‰

0-1

1.000-1.070
1‰

0.001
±1‰

±0.001

Copper Alloy w/ Nickel-Chrome Coating

Carrying Case (1 ea.),

Optical Glass

Automatic

20°C

+10 to +30°C

Transparent, Translucent, & Opaque

>0.1mL

Distilled Water

Liquid Standard

40 (L) x 40 (W) x 185 (H) mm

285g

Plastic Transfer Pipet (1 ea.),

Instruction Manual (1 ea.)

Printed in the USA No. PS062007PSRFSTX3BRL-A