• Largest & sharpest display scale available
• Exclusive “Zero-Ring” requires no calibration tools
• Durable, all-metal design
• Double-hinged daylight plate allows thick samples to be measured
• Rubber grip guards against temperature changes caused by the user’s hand
• Non-roll stand protects against damage

Easy to use. 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 readings.

Accurate. Featuring the largest, easiest-to-read scale available with clear, sharp figures, screen shading, and incredible contrast. These features significantly enhance overall accuracy… even when the instrument is used by several different operators. All units feature rubber grips on the body, which lock the transmission of hand heat to reduce temperature errors.

Compact & Portable. The small size of the X-Series models allows them to be used anywhere… the field, plant, or lab.

Tool-free calibration. The Vee Gee exclusive “Zero-Ring” eliminates the hassle of using a separate tool for calibration. Simply place a few drops of distilled water or liquid standard (R.I. oil or prepared sucrose solution) on the prism, turn the built-in “Zero-Ring” until the shadowline is at the correct value of the liquid, and secure the set screw… that’s it!

Durable. The X-Series models feature rugged construction to provide years of reliable use. The prism is mounted in an all-metal housing which allows the sample and prism to reach temperature equilibrium quickly. Also feature non-roll stands to ensure that once the units are placed on a table or bench top, they won’t be probe to roll off the surface.

Wide Selection of Scales & Ranges. Choose from Brix, Salinity, Refractive Index (nD), and Coolant (freezing points of Ethylene & Propylene Glycol, Battery Charge Level).

Automatic Temperature Compensation (ATC). Model BTX-1, BTX-20, STX-3, CTX-1 & CTX-2 feature ATC which frees the user from having to recalibrate in work environments with large temperature swings. The effective compensation range is 10 to 30°C.

Each refractometer is supplied with a storage case, plastic transfer pipet and instruction manual.

Model	Scale	Range	Resol.	Accuracy	Part Number
STX-3	Salinity	0-100‰	1‰	±1‰	43036
	Specific Gravity of Seawater	1.000-1.070	0.001	±0.001