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pH Portable Meter, HACCP, Skin

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Skin pH Portable Meter (HACCP)


The HI-99181 is a durable, waterproof, and portable pH and temperature meter designed specifically for analysis of skin. Automatic calibration is performed at one or two points with two sets of buffers. All calibration and measurement readings are automatically compensated for temperature variations.

The HI-99181 uses the HI-14143/50 glass body, amplified pH electrode that offers numerous features that improve pH testing for skin and surface measurements. The split-level LCD displays both pH and temperature readings, along with indicators for reading stability, battery percentage, and calibration instructions.

  • Automatic Temperature Compensation
  • Automatic Two-Point Calibration
  • Waterproof


Many factors affect the pH of skin, including age, genetics, sweat, and moisture. Skin has a naturally acidic pH, ranging from pH 4 to 6. However, continued effects of alkaline cosmetic products, soaps, and detergents can easily raise the skin’s natural pH. A higher-than-normal pH can lead to adverse skin conditions, so monitoring the biological compatibility between skin and cosmetics and pharmaceuticals is essential.

TThe HI99181 uses the HI14143/50 amplified pH electrode with glass body. This specialized electrode offers numerous features that improve surface pH testing. An integrated temperature sensor allows for temperature compensated pH measurements without the need for a separate temperature probe. The probe’s flat sensing tip provides optimal surface contact for skin measurement.

An integral part of any pH electrode is the reference junction. The reference junction is a part of the electrode that allows for the flow of ions located in the reference cell into the sample being tested. It is vital that this flow occurs in order to complete an electrical circuit, which ultimately determines the pH value. Poor contact between the junction and sample will prevent completion of the circuit, resulting in readings that are erratic or constantly drifting. The flat tip of the HI14143/50 provides optimal surface contact between the sample and the junction. The HI14143/50 features an open junction design which utilizes a viscolene reference electrolyte that comes into direct contact with skin’s surface, providing accurate, stable readings.
HI1414D/50

Glass Body

Glass Body
The glass body of the HI14143/50 is chemically resistant and quick to reach thermal equilibrium, allowing for a faster, more stable response.

Flat Tip

Flat Tip
The flat tip sensing bulb allows for the direct surface measurement of skin. Maximum surface contact is achieved with this specialized tip shape.

ATC

Open Junction Reference
The open junction design consists of a solid gel interface (viscolene) between the sample and internal Ag/AgCl reference. This interface not only prevents silver from entering the sample, but also makes it impermeable to clogging, resulting in a fast response and stable reading.

ATC

Built-in Temperature Sensor
Errors in calibration and measurement are eliminated with the Automatic Temperature Compensation provided by the integrated temperature sensor.


Features

  • Waterproof
  • Automatic Calibration
  • Automatic Temperature Compensation
  • Multi-Level LCD Display
  • Sensor Check
  • Probe Condition Indicator
  • Battery Error Prevention System
  • Battery Life Indicator


Specifications


pH Range -2.00 to 16.00 pH; -2.0 to 16.0 pH
pH Resolution 0.01 pH; 0.1 pH
pH Accuracy ±0.02 pH; ±0.1 pH
pH Calibration automatic, at one or two points with two sets of buffers (standard 4.01, 7.01,10.01 or NIST 4.01, 6.86, 9.18)
pH Temperature Compensation automatic from -5.0 to 105.0ºC (23 to 221ºF)
pH CAL Check (electrode diagnostics) probe condition indicator
pH Sensor Check yes
mV Range ±825 mV (pH‐mV)
mV Resolution 1 mV (pH‐mV)
mV Accuracy ±1 mV (pH‐mV)
Temperature Range -5.0 to 105.0°C / 23.0 to 221.0°F
Temperature Resolution 0.1°C / 0.1°F
Temperature Accuracy ±0.5°C (up to 60°C); ±1.0°C (outside) / ±1°F (up to 140°F); ±2.0°F (outside)
pH Electrode HI14143/50 pre-amplified pH probe with internal temperature sensor, quick connect DIN connector and 1 m (3.3’) cable (included)
Automatic Shut-Off user selectable
Battery Type/Life 1.5V (3) AAA / approximately 1400 hours of continuous use
IP Protection IP67
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 154 x 63 x 30 mm (6.1 x 2.5 x 1.2”)
Weight 196 g (6.91 oz.)


Product Manual

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Brand : Hanna Instruments

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