Description
Product Overview
The Vee Gee Scientific STX-3 handheld refractometer is engineered for precise measurement of salt concentration in seawater, offering ranges of 0 to 100% parts per thousand (PPT) and specific gravity (SG) from 1.000 to 1.070 within a temperature range of 10 to 30 degrees Celsius. Constructed with a durable metal and rubber outer shell, this device features a telescope-shaped, streamlined design measuring 40 x 40 x 185mm, ensuring portability and resilience. The optical glass prism, mounted in all-metal housing, facilitates quick temperature equilibrium between the sample and prism, while automatic temperature compensation (ATC) provides immediate, accurate readings regardless of ambient conditions. Ambient light illuminates the scale, eliminating the need for an external power source, and a non-roll stand protects against damage during use. Weighing 10.08 ounces with dimensions of 7.3 x 1.6 x 1.6 inches, this refractometer combines robust materials with advanced functionality for reliable performance in various settings.

Usage
This refractometer is designed for realistic applications in marine biology, aquaculture, and environmental science, where accurate salinity measurement is critical. It is ideal for field researchers, aquarists, and laboratory technicians who need to monitor seawater quality in settings such as coastal studies, fish farms, or home aquariums. The handheld, portable nature allows for on-site testing without the constraints of fixed equipment, making it suitable for occasions like water sampling expeditions, routine maintenance checks, or educational demonstrations. Target audiences include professionals and hobbyists seeking dependable, easy-to-use tools for maintaining optimal salinity levels, ensuring the health of marine ecosystems and aquatic life.
Why Choose Us
Choosing the Vee Gee Scientific refractometer means investing in a product with competitive advantages rooted in quality assurance and unique selling points. The automatic temperature compensation system sets it apart by delivering consistent accuracy across varying environmental conditions, reducing the risk of errors common in less advanced models. Crafted from high-grade metal and rubber, it offers superior durability and a ergonomic rubber grip that minimizes hand heat interference, enhancing measurement precision. Unlike generic alternatives, this refractometer requires no external power, thanks to ambient light illumination, making it more versatile and cost-effective. Backed by a manufacturer with a reputation for reliability, it ensures long-term performance and trustworthiness in demanding industrial and scientific applications.
Key Features
- Automatic temperature compensation for accurate readings in changing environments
- Handheld portable design with durable metal and rubber construction for easy field use
- Ambient light illumination eliminates the need for batteries or external power sources
- Optical glass prism in all-metal housing ensures quick sample temperature equilibrium
- Non-roll stand and rubber grip provide stability and protection during measurements
FAQ
What is the measurement range for salt concentration?
The refractometer measures salt concentration from 0 to 100% parts per thousand (PPT), covering a wide spectrum for seawater analysis.
Does it require batteries or an external power source?
No, it uses ambient light to illuminate the scale, so no batteries or external power are needed for operation.
How does automatic temperature compensation work?
ATC adjusts readings based on ambient temperature, ensuring accuracy without manual calibration in the 10 to 30 degrees Celsius range.
What materials is the refractometer made from?
It features a durable metal and rubber outer shell with an optical glass prism, designed for resilience and precise measurements.
Is it suitable for home aquarium use?
Yes, its portable design and easy operation make it ideal for aquarists to monitor salinity in home aquariums effectively.




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