Hanna Instruments HI 99181N Skin pH Meter

Hanna Instruments HI 99181N Skin pH Meter Review

Hanna Instruments HI 99181N Skin pH Meter Feature

• Automatic one- or two-point calibration with two sets of buffers, for ease of use
• Replaceable probes to prolong the life of the meter
• Automatic Temperature Compensation (ATC) to eliminate the need for extra calculations
• Flat-tip probe for skin pH measurement
• LCD screen for readability

The HI 99181 is a portable, microprocessor-based pH and temperature meter with a flat surface probe suitable for skin pH measurement. The meter features replaceable pH and temperature probes, an LCD screen, and Automatic Temperature Compensation (ATC). A built-in temperature sensor allows simultaneous temperature compensated pH and temperature readings and an integral pH sensor preamplifier provides measurements impervious to noise and electrical interferences. Calibration is automatic at one or two points with two sets of memorized buffers (Standard 4.01, 7.01, 10.01 pH or NIST 4.01, 6.86, 9.18 pH), and calibration sachets are included.

pH range is -2.00 to 16.00 (+ or - 0.02 pH at 20 degrees C/68 degrees F) with a resolution of 0.01 pH. Temperature range is -5.0 to 105.0 degrees C (23.0 to 221.0 degrees F) + or - 0.5 degrees C (up to 60 degrees C) and 1.0 degrees C (outside); 1.0 degrees F (up to 140 degrees F) and 2.0 degrees F (outside) with a resolution of 0.1 degrees C (0.1 degrees F). The device operates on three 1.5V AAA batteries and turns off automatically after eight minutes of non-use. Dimensions are 152 x 58 x 30 mm/6.0” x 2.3” x 1.2’’ (H x W x D), and weighs 205 g (7.2 oz.).

pH testers measure the acidity or alkalinity of a substance and are commonly used by researchers, manufacturers, and hobbyists.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) 9001 standards.

What’s in the Box?

• HI 1414D/50 pH/temperature probe, DIN connector, and 1-m cable
• HI 700621 cleaning solution, 20 mL sachet (2)
• Calibration sachets
• Batteries
• Instructions