This handheld salinity refractometer reads salt content on a 0-10% scale and shows specific gravity from 1.000 to 1.070 SG, using a few drops of liquid on the main prism and a look through the eyepiece against the light. It has automatic temperature compensation, a rubber grip and a focus ring, and suits marine aquarium water, brine and low-strength salt solutions.
Features and benefits:
- 0-10% salinity scale with a specific gravity scale of 1.000 to 1.070 SG: two readings from one drop of sample
- Division of 0.1% and 0.001 SG, with accuracy of 0.1% and 0.001 SG as published: fine enough for tank water and brine checks
- Automatic temperature compensation (ATC) over 10 to 30°C, reference temperature 20°C: less need to correct readings by hand
- Rubber grip on the handle: comfortable to hold and keeps the sample away from hand warmth
- Focus adjustment ring on the eyepiece and a zero-setting screw: set the scale sharp and zero it before use
- Daylight plate closes over the prism: spreads the sample into a thin film for a clear boundary line
- Overall length 195mm: small enough to keep in a tool case or by the tank
Applications:
- Checking salinity in marine aquarium water
- Testing brine and weak salt solutions in workshops, schools and food preparation
- Reading salt solution density against the SG scale
- Checking low sugar liquids such as tea or tomato juice
- Checking the strength of cutting and grinding fluids, as described by the maker
In the box:
Per unit: 1 x refractometer, 1 x pipette, 1 x instruction manual, 1 x mini screwdriver and 1 x cleaning cloth. The with box option adds a plastic storage case with a foam insert. The without box option is the instrument and accessories only.
Note: Wipe the prism and daylight plate with the cloth after each sample and keep the instrument dry. Set the zero with the adjustment screw before measuring, and read the scale at 20°C reference or within the 10 to 30°C ATC range.
Instrument type: Optical handheld refractometer. Use: Salinity. Measurement range: 0-10% salinity. Specific gravity range: 1.000 to 1.070 SG. Minimum division: 0.1%; 0.001 SG. Measurement accuracy: 0.1%; 0.001 SG. Salinity scale: Per mille (‰) at 20°C. Density scale: d 20/20 specific gravity. Automatic temperature compensation: Yes, 10 to 30°C. Reference temperature: 20°C. Focus: Adjustable eyepiece ring. Zero adjustment: Adjustment screw. Brix scale: None fitted. Options: With box or without box. Overall length: 195mm. Body width: 40mm. Eyepiece section length: 58mm. Eyepiece bottom section height: 30mm. Handle: Rubber grip. Sample cover: Daylight plate over the main prism. Accessories: Pipette, mini screwdriver, cleaning cloth, instruction manual. Storage case: Plastic case with foam insert (with box option only). Power: None, optical instrument. Weight: Not published. Q: What is a refractometer? A: A refractometer measures how much light bends as it passes through a liquid, which relates to what is dissolved in it. This model turns that into a salinity reading on a 0-10% scale and a specific gravity reading from 1.000 to 1.070 SG.. Q: How do I use a refractometer for salt water? A: Place a few drops of the liquid on the main prism, close the daylight plate and look through the eyepiece against the light. Turn the focus ring until the scale is sharp and read the point where the blue and white boundary crosses the scale.. Q: How do I set the zero on a refractometer? A: This one has a zero-setting screw, supplied with a mini screwdriver. Turn it so the boundary line sits on zero before you measure the sample, following the method in the instruction manual.. Q: Does it correct for temperature? A: Yes. It has automatic temperature compensation over 10 to 30°C, with a reference temperature of 20°C.. Q: Can it read sugar or Brix? A: No Brix scale is fitted. The scales are salinity and specific gravity, although the maker says it can be used on low sugar liquids such as tea or tomato juice..