This handheld salinity refractometer shows dissolved salt on two scales at once: parts per thousand up to 100 ppt, and specific gravity from 1.000 to 1.070. That lets you check seawater strength without changing units. It has automatic temperature compensation, an aluminium body and a manual focus eyepiece, and it works from ambient light only, so there is no battery or power supply to look after.
Features and benefits:
- Two scales in one view: salt in ppt up to 100 and specific gravity from 1.000 to 1.070, with divisions of 1 ppt and 0.001 SG
- ATC marking on the body: automatic temperature compensation, with the salinity scale referenced at 20°C
- Stated accuracy of ±1 ppt or 0.001 SG (±0.10%): enough resolution for checking mixed seawater and brine
- Metal adjustment knob and correction screw: set the scale to zero with 2 to 3 drops of water on the prism
- Adjustable focus hand wheel: a sharp scale line for different eyes
- Soft non-slip silicone handle and soft rubber eye piece: comfortable to hold and look through
- Aluminium body, listed by the seller as non-corrosive and light enough to carry in a tool bag or kit box
Applications:
- Mixing and topping up aquarium seawater
- Checking sea salt solutions and brines in workshops, schools and labs
- Teaching refraction and dissolved solids measurement
- Quick salt strength checks in food preparation and brewing
In the box:
The instrument comes with a pipette, a screwdriver for setting the zero, a cleaning cloth and a printed manual in six languages: English, Russian, Spanish, German, Japanese and Korean. Choose the carton box, plastic box or leather box in the options.
Note: Set the zero on water before each session, then place a few drops of the sample on the prism, close the cover and read the scale against the light. Wipe the prism clean after every use. The listing also shows a Brix scale image, but this unit is sold for salinity use.
Instrument type: Handheld optical refractometer. Use: Salinity (sea salt, seawater). Salinity range: 0 to 100 ppt. Specific gravity range: 1.000 to 1.070 SG. Divisions: 1 ppt / 0.001 SG. Accuracy: ±1 ppt / 0.001 SG (±0.10%). Temperature compensation: ATC (automatic). Scale reference temperature: 20°C. Focus: Manual, adjustable with hand wheel. Zero adjustment: Correction screw and metal adjustment knob. Power: None, uses ambient light only. Body material: Aluminium. Model: THE01502. Size: 160 x 59 x 49mm. Length: 170mm (seller figure). Weight: 230g (attribute); 240g (description). Handle: Non-slip silicone. Eye piece: Soft rubber. Prism: Refractive prism with cover. Manual languages: English, Russian, Spanish, German, Japanese, Korean. Supplied accessories: Pipette, screwdriver, cleaning cloth, instruction manual. Pack options: Carton box, plastic box or leather box. Q: What is a refractometer? A: A refractometer measures how much light bends as it passes from the prism into a liquid, and that bend changes with the amount of dissolved material. This model turns it into a salinity reading in ppt and specific gravity.. Q: How do you use a refractometer for seawater? A: Put a few drops of the sample on the main prism, close the cover and look through the eyepiece towards a light source. Turn the eyepiece until the scale is sharp and read the value where the boundary crosses the scale.. Q: How do you set the zero on a refractometer? A: Place 2 to 3 drops of water on the prism, close the cover and look through the eyepiece. Turn the correction screw with the supplied screwdriver until the boundary sits on the 0 line.. Q: Does this refractometer need batteries? A: No. It works from ambient light only, so there is no battery or power source to manage.. Q: Can I use it for salt water aquariums? A: Yes, it has a 1.000 to 1.070 specific gravity scale and a ppt scale, and the maker lists it for aquarium seawater and sea salt..