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HI-99171 Leather and Paper pH Meter

HI-99171 Leather and Paper pH Meter

Hanna HI-99171 Leather and Paper pH Meter

HI-99171 Leather and Paper pH Meter

2 year manufacturer warranty
In Stock
£546.10 (exc. VAT) £655.32 (inc. VAT)

HI-99171 is a light weight, portable pH meter supplied with a specially designed pH electrode intended for the direct determination of pH on flat surfaces, such as leather or paper.

HI-99171 Leather and Paper pH Meter information

Hanna's extended description

  • Simultaneous pH and temperature measurements on a large dual-line LCD display
  • User-friendly two button design
  • Application specific probe
  • Durable IP67 waterproof casing
  • Watertight probe connection
  • Probe condition indicator
  • Automatic pH calibration at one or two points within two memorized buffer sets (standard or NIST)
  • On-screen calibration tags
  • mV measurement for electrode check
  • Selectable temperature unit (°C or °F)
  • Auto-off function
  • Battery life indication and low battery detection
  • The HI-99171 portable pH meter together with a HI-14143 combination pH electrode (when immersed in a drop of water on the surface of the sample), can determine the pH of the surface with high accuracy and repeatability without the requirement of sample destruction.

    During production of cartons and paper used for food packaging, pH measurements provide a useful gauge of product compatibility. pH of a paper is usually considered one of the most reliable indices of the permanence of a paper.

    Conservators of historical documents (some of which are very valuable or irreplaceable) require a convenient non-destructive method to determine pH.

    Leather technicians rely on a pH determination to optimize dyes, coating, and softening agents in order to preserve the fibre structure and prevent damage to leather. Leather is acidic. Its pH is measured at between 4.5 and 5.0. Surface pH measurements provide a non-destructive means to meet specifications and optimize product quality.


    Specifications list


    Range - pH -2.00 to 16.00 pH
    Range - Temperature -5.0 to 105.0°C / 23.0 to 221.0°F
    Resolution - pH 0.01 pH
    Resolution - Temperature 0.1°C / 0.1°F
    Accuracy - pH ±0.02 pH
    Accuracy - Temperature ±0.5°C (up to 60°C), ±1°C (outside);
    ±1.0°F (up to 140°F), ±2°F (outside)
    pH Calibration automatic, 1 or 2 point selectable buffer set standards pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
    Temperature Compensation Automatic, -5 to 105°C (23 to 221°F)
    pH Electrode HI-14143 pre-amplified, flat tip,
    with internal temperature sensor (included)
    Battery Type / Life 3 x 1.5V AAA/ approx. 1400 hours of continuous use:
    auto-off after 8 minutes of non-use
    Environment 0 to 50°C (32 to 122°F); RH max 100%
    Dimensions 154 x 63 x 30 mm
    Weight 196 g
    Supplied with: HI-14143 pH/temperature probe with flat tip and Quick Connect DIN connector with 1m (3.3’) cable, pH 4.01 and 7.01 buffer sachets, HI-700680 cleaning solution for ink stains sachets (2), HI70960 conductive electrolyte solution for pH measurement (30 mL), 100 mL beaker, 1.5V AAA batteries (3), calibration certificate of meter, calibration certificate of probe, instruction manual, and HI710142 rugged carrying case.

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