Hanna pH Tester for Hydroponics

Hanna pH Tester for Hydroponics


  • Accurate and economical measurements
  • Simple calibration
  • Long battery life
  • Small diameter probe fits easily into a test tube
  • Replaceable electrode

HI 99104 is an ideal pocket tester designed with a 0.01 pH resolution and two point manual calibration through easy to reach trimmers, it immediately displays pH variations to reflect the smallest change in the sample.

Unlike conventional testers, HI 99104 has a long and slim stem, ideal for measurements in small samples or test tubes.

HI 99104 is supplied with a rugged, plastic body electrode with a screw connector that allows for quick and easy electrode replacement.

Additionally, it's low power demand allows for 1000 hours of battery life with common 1.5V batteries.

HI 99104 is supplied with HI 1270 pH electrode, batteries and instructions.


Range: 0.00 to 14.00 pH
Resolution: 0.01 pH
Accuracy: ±0.2 pH
Calibration: manual, 2 points
Ph Electrode: HI 1270 (included)
Battery Type/Life: 1.5V (2) / Approximately 1000 hours of continuous use
Enviroment: 0 to 50°C (32 to 122°F) RH max 95%
Dimensions: 200 x 28 x 20 mm (7.9 x 1.1 x 0.8")
Weight: 46g (1.6 oz)

Item Number: 139622
Manufacturer: Hanna Instruments
Manufacturer's Part Number: HI99104


pdf file Instruction Guide
pdf file Instructions

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