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Hanna Instruments Digital Refractometer - HI96822
Hanna Instruments Digital Refractometer - HI96822
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$519.99
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The HI96822 is a rugged, portable digital refractometer designed for the measurement of salinity of natural or artificial seawater. The HI96822 displays results in three popular measurement units: Practical Salinity Units (PSU), salinity in parts per thousands (ppt) and specific gravity (S.G. (20/20)). The instrument’s high accuracy and simple operation gives reliable results each and every time. All readings are automatically compensated for temperature variations and displayed within a 1.5 second response time. The sealed flint glass prism and stainless steel well are easy to clean. Just wipe with a soft cloth in preparation for the next sample.
- Sample size as small as 2 metric drops (100 µl)
- Sealed stainless steel well with high-grade optical prism made of flint glass
- Fast 1.5 second response time for temperature compensated readings
Hanna Instruments new HI96800 Digital Refractometer combines form and function into one compact unit. Featuring a 1.5 second response time, the HI96800 measures refractive index from 1.3330 to 1.5040 with temperature compensation (nD20) and from 1.3300 to 1.5080 without temperature compensation (nD). For added versatility the refractometer also converts refractive index to % Brix (0-85%). One-button calibration makes setup quick and easy.
The improved easy-to-read LCD screen displays temperature units (℃ or ℉) and measurements simultaneously. By pressing the ‘Range’ key, users can easily switch between refractive index (nD), refractive index (nD20) and % Brix readings while in measurement mode. The HI96800’s IP65 water-resistant casing and sealed sample well is built to perform under harsh conditions, making it suitable for use in the field or in the laboratory.
- 1.3300-1.5080 Refractive Index range with ±0.0005 accuracy
- 0-85% Brix range with ±0.2% accuracy
- Simple one-button calibration
- Automatic Temperature Compensation (ATC) and No Temperature Compensation Settings (NoTC)
Refractive Index
The HI96800 takes measurements based on a sample’s refractive index. Refractive index is a measurement of how light behaves as it passes through the sample. Depending on the sample’s composition, light will refract and reflect differently. By measuring this activity with a linear image sensor, the sample’s refractive index can be assessed and used to determine its physical properties such as concentration and density. In addition to the linear image sensor, the HI96800 uses an LED light, prism and lens to make measurement possible.
Variations in temperature will affect the accuracy of refractive index readings, so the use of temperature compensation is highly recommended for reliable results. The HI96800 contains a built-in temperature sensor and is programmed with temperature compensation algorithms in accordance with the ICUMSA Methods Book Standard for a percent by weight sucrose solution at 20℃. These compensation algorithms vary based on the parameter being measured. The user can switch between temperature compensated (nD20), non-temperature compensated (nD) and temperature compensated % Brix readings by pressing the ‘Range’ key while in measurement mode.
Features at-a-glance:
One-point calibration
- Calibrate with distilled or deionized water
Small sample size
- Sample size can be as small as 2 metric drops (100 μl)
Automatic Temperature Compensation (ATC)
- Automatically compensates for temperature variations
Quick, accurate results
- Readings are displayed in approximately 1.5 seconds
Upgraded Dual-level LCD
- The large LCD screen displays nD20, nD or % Brix and temperature readings simultaneously
Stainless steel sample well
- Easy to clean and corrosion-resistant
Battery indicators
- Battery percent level remaining at startup and low battery indicator
Automatic shut-off
- Conserves battery life by shutting off automatically after three minutes of inactivity
IP65 water resistant protection
- Water resistant ABS plastic casing designed to perform under laboratory and field conditions.
Specifcations
SKU HI96822 Name Digital Refractometer for Seawater Analysis - HI96822 Salinity (PSU) Range 0 to 50 PSU Salinity (PSU) Resolution 1 PSU Salinity (PSU) Accuracy ±2 PSU Salinity Range 0 to 150 ppt Salinity Resolution (ppt) 1 ppt Salinity Accuracy (ppt) ±2 ppt Specific Gravity Range 1.000 to 1.114 Specific Gravity (20/20) Specific Gravity Resolution 0.001 Specific Gravity (20/20) Specific Gravity Accuracy ±0.002 Specific Gravity (20/20) Temperature Range 0 to 80°C (32 to 176°F) Temperature Resolution 0.1°C (0.1°F) Temperature Accuracy ±0.3 °C (±0.5 °F) Temperature Compensation automatic between 0 and 40°C (32 to 104°F) Automatic Shut-Off after three minutes of inactivity Battery Type/Life 9V / approximately 5000 readings Dimensions 192 x 102 x 67 mm (7.6 x 4.01 x 2.6”) Weight 420 g (14.8 oz.) Refractometer Light Source yellow LED Minimum Sample Volume 100 µL (to cover prism totally) Sample Cell stainless steel ring and flint glass prism Measurement Time approximately 1.5 seconds Manuals
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