Silica High Range Portable Photometer - HI96770

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Silica High Range Portable Photometer - HI96770

$220.00

The HI96770 Silica High Range Photometer combines accuracy and ease of use in an ergonomic, portable design. Using the HI96770-0 ready-made reagents a user can accurately determine the concentration of silica within a 0 to 200 mg/L (ppm) range. The HI96770 offers many advanced features including the exclusive CAL Check function used for performance verification and calibration of the meter.




CAL Check Validation and Calibration



Built-in Timer



Automatic Shut Off

Details

The HI96770 portable photometer is for the high range measurement of silica. Hanna's portable photometers feature an advanced optical system; the combination of a special tungsten lamp, a narrow band interference filter, and silicon photodetector ensure accurate photometric readings every time. The Hanna exclusive CAL Check feature utilizes ready-made, NIST traceable standards to verify both meter validation and calibration. The exclusive cuvette locking system ensures that the cuvette is inserted into the measurement cell in the same position every time to maintain a consistent path length.

 

Features at-a-glance

CAL Check - Allows for performance verification and calibration of the meter using a CAL Check NIST traceable secondary standard.

GLP - Records the date of the last user calibration performed.

Built in timer - Allows the use of a timer to ensure the appropriate 3 minutes and 30 seconds reaction time is used for the chemical reaction. At the end of the timer countdown the meter will automatically take the reading. This feature ensures consistency across multiple users.

Indexing indent on meter - The meter has an indent that allows for a lock and key fit with the cuvette cap. This ensures that the cuvette is indexed consistently (same position) in order to maintain the same path length for accurate results.

Cooling Lamp Indicator - It is necessary to maintain a consistent temperature of the optical components in order to maintain a narrow wavelength band of light. This photometer has a cooling lamp indicator that is displayed for a short period of time before each measurement in order to allow the components to cool and obtain the highest accuracy possible.

Error messages - Messages on display alerting to problems including no cap, over range and under range readings, and light source error.

Auto-shut off - Automatic shut off after 10 minutes of non-use when the meter is in measurement mode. Prevents wastage of batteries in the event the meter is accidentally not turned off.

Battery status indicator

The instrument has a battery level indicator to display reaming life as follows:

• 3 lines for 100 % capacity

• 2 lines for 66 % capacity

• 1 line for 33 % capacity

• Battery icon blinks when the capacity is less than 10 %.

Units of measure - Appropriate unit of measure is displayed along with reading.

 

photometer optical system

Silica is found in all natural waters in the dissolved mineral form. Silica is only slightly soluble in water and can be found as ionic silica, silicates, or colloidal or suspended particles. The solubility of silica is highly dependent on pH, temperature, and pressure, and in unfavorable conditions forms deposits or scale. Silica’s presence in industrial applications, particularly high pressure turbines, is undesirable because of the scaling caused by the elevated temperature and pressure. Heating systems and reverse osmosis plants also require monitoring of silica to ensure process efficiency.


The HI96770 uses an adaptation of the USEPA Method 370.1 and Standard Method 4500-SiO2 C to measure silica concentrations of less than 200 mg/L (ppm). When the reagent is added to samples containing silica, the sample will turn a yellow hue; the greater the concentration, the deeper the color. The associated color change is then colorimetrically analyzed according to the Beer-Lambert Law. This principle states that light is absorbed by a complementary color, and the emitted radiation is dependent upon concentration. For high range silica determination, a narrow band interference filter at 466 nm (blue) allows only blue light to be detected by the silicon photodetector and omits all other visible light emitted from the tungsten lamp. As the change in color of the reacted sample increases, absorbance of the specific wavelength of light also increases, while transmittance decreases.

The HI96770 is available as a kit which includes:

  • Portable Photometer
  • Sample cuvettes (2)
  • Caps
  • CAL Check™ standards with certificate
  • Cuvette cleaning cloth
  • Scissors
  • Rugged carrying case
    • Carrying case has thermoformed insert for meter and accessories
*Reagents ordered separately
cal check standards

CAL Check™ standards with certificate

The HI96770-11 CAL Checkstandards are used for calibration and performance verification of photometers with the CAL Check function.

Supplied with Certificate of Analysis
  • Lot number
  • Expiration date
  • Standard value @ 25 °C
  • Reference meter NIST traceable
Provided storage containers
  • Light tight
  • Protects from accidental breakage
 

 

Silica Range 0 to 200 mg/L (ppm)
Silica Resolution 1 mg/L (ppm)
Silica Accuracy ±1 mg/L ±5% of reading
Silica Method adaptation of the USEPA method 370.1 for drinking, surface and saline waters, domestic and industrial wastes, and Standard Method 4500-SiO2 C
Photometer/Colorimeter Light Source tungsten lamp
Photometer/Colorimeter Light Detector silicon photocell with narrow band interference filter @ 466 nm
Battery Type/Life 9V battery
Automatic Shut-Off after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Weight 360g (12.7oz.)
Dimensions 193 x 104 x 69 mm (7.6 x 4.1 x 2.7”)
Ordering Information HI96770 is supplied with sample cuvettes (2) with caps, 9V battery, instrument quality certificate and instruction manual.

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