Hanna Instruments HI99181 Skin pH Portable Meter

For the analysis of skin, Hanna Instruments created the HI99181 pH and temperature meter, which is robust, waterproof, and portable. With two sets of buffers, automatic calibration is carried out at one or two places. Temperature changes are automatically accounted for in every calibration and measurement reading.

The HI99181 makes use of the HI14143/50 glass body, amplified pH electrode, which comes with a number of characteristics that enhance pH testing for measurements on the skin and other surfaces. The split-level LCD also shows indicators for reading stability, battery life, and calibration instructions in addition to pH and temperature readings.

Automatic Temperature Compensation
Automatic Two-Point Calibration
Waterproof

Categories: pH, Portable Meter

Description

The pH of skin is influenced by a variety of factors, such as age, genetics, sweat, and moisture. Skin has an acidic pH by nature, which ranges from 4 to 6. However, prolonged use of alkaline cosmetics, detergents, and soaps can readily raise the skin’s pH level naturally. Monitoring the biological compatibility between skin and cosmetics and medications is crucial since a pH that is higher than usual might result in unfavorable skin disorders.

The HI99181 makes use of the amplified pH electrode with glass body, model HI14143/50. Numerous features of this customized electrode enhance surface pH testing. Without the use of a separate temperature probe, temperature compensated pH measurements are possible thanks to an inbuilt temperature sensor. The flat sensor tip of the probe offers the best possible surface contact for skin measurement.

The reference junction is a crucial component of every pH electrode. The electrode’s reference connection facilitates the passage of ions from the reference cell into the sample under test. The completion of an electrical circuit, which ultimately determines the pH value, depends on this flow. Readings that are unpredictable or constantly drifting are caused by poor contact between the junction and sample, which prevents completion of the circuit. The HI14143/50’s flat tip gives the sample and junction the best possible surface contact. The open connection design of the HI14143/50 uses a viscolene reference electrolyte that is in direct touch with the skin’s surface to deliver precise, steady readings.

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 at-a-glance

Waterproof – The HI99181 is a waterproof meter rated IP67 for immersion in up to one meter of water for 30 minutes.

Automatic Calibration – One or two-point calibration is automatic to two selectable buffer sets.

Automatic Temperature Compensation – An integrated temperature sensor allows for automatic temperature compensation of pH measurements.

Sensor Check – Using the pH‐mV range the user can check the sensor status by reading the mV reading in fresh buffers. At room temperature (25 ^oC/77^oF) the reading should be +/- 30 mV in pH 7.01 and greater than 150 mV difference between pH 7.01 and 4.01.

Multi-Level LCD Display – The split-level LCD displays both pH and temperature readings, along with indicators for reading stability, battery percentage, and probe condition.

Probe Condition Indicator – The probe condition indicator is based on the offset and slope characteristic of the electrode. There are 5 bars ranging from all 5 indicating the probe is in excellent condition and 1 bar indicating the probe should be cleaned or replaced.

Battery Error Prevention System – The meter will automatically shut off if there isn’t enough power to obtain an accurate measurement.

Battery Life Indicator – The battery percent level is displayed at start up alerting the user to the remaining battery power that is available.

Hanna Instruments HI99181 Skin pH Portable Meter

Features at-a-glance

Related products

Login