Digital Flat Tip Electrode for Edge Meters

Hanna HI-14140 Digital Flat-Tipped pH Electrode for Surface, Skin, Paper & Emulsion Testing

The HI-14140 is a digital flat-tipped pH electrode designed for accurate measurements on surfaces and semi-solid materials where conventional bulb electrodes cannot make reliable contact. Its low-temperature glass, open junction and viscolene electrolyte provide fast, stable readings across a wide range of sample types, including skin, paper, leather and emulsion-based products.

Featuring an integrated temperature sensor and built-in amplifier, this electrode ensures precise pH measurement with automatic temperature compensation and enhanced signal stability. The flat tip geometry delivers optimal surface contact, making it particularly suitable for cosmetic, dermatological, industrial and QC applications. Compatible with meters using a 3.5 mm connector, including the Hanna Edge series.

Key Features

Flat-Tip Design: Provides strong, even contact on flat or irregular surfaces for consistent pH measurement where a traditional bulb cannot sit evenly.

Open Junction with Viscolene Electrolyte: Reduces clogging and enhances stability when working with creams, gels, residues or biological surfaces.

Integrated Temperature Sensor: Enables automatic temperature compensation without additional probes, improving measurement accuracy.

Digital Amplified Signal: Built-in amplifier ensures noise-free, interference-resistant measurement, ideal for sensitive or low-conductivity surfaces.

Ideal for Surface & Material Testing: Suitable for skin, paper, leather, emulsions and coated materials commonly analysed in cosmetic, industrial and QC workflows.

Shipped from our Manchester, UK Facility

All Hanna electrodes are securely packaged and shipped from our Manchester warehouse for fast, reliable UK delivery. Product support and application advice are available from our technical team.

• pH measurement on skin and scalp for dermatological and cosmetic testing

• surface analysis on paper, cardboard and printed materials

• leather pH assessment in tanning and finishing processes

• testing creams, lotions, gels and other emulsion-based samples

• general flat-surface pH measurement across a wide range of materials

Model: HI-14140

Description: Digital flat-tipped pH electrode for surface testing

Reference: Single, Ag/AgCl

Junction: Open

Electrolyte: Viscolene

Range: 0 to 12 pH

Recommended Operating Temperature: 0 to 50 °C

Maximum Pressure: 0.1 bar

Glass Type: Low temperature glass

Tip / Shape: Flat surface tip

Temperature Sensor: Yes (integrated)

Amplifier: Yes (digital)

Matching Pin: No

Body Material: Glass

Cable Length: 1 metre

Recommended Use: Skin, paper, leather, emulsions and general surface pH measurement

Connector: 3.5 mm

HS Code: 90279050