The Hanna Instruments HI 991404-01 is a pH/EC/TDS/Temperature Monitor for low range EC & TDS. The indicator on the Hanna Instruments HI 991404 continuously monitors the three most crucial nutrient parameters in hydroponic, greenhouse and horticultural applications.

At startup, the Hanna Instruments HI 991404-01 performs a self-check to assure proper working condition. The stability indicator and HOLD function lets the user know when to take readings and freezes the reading on display for easy and accurate recording.

The Hanna Instruments HI 991404-01 is supplied with a non-clogging double junction pH electrode as well as a rugged conductivity probe that will withstand even the most aggressive environments. The 12 VDC adapter makes these instruments ideal for all continuous monitoring application

Features:

• Waterproof

• Adjustable TDS ratio and adjustable β

• Stability indicator and HOLD

What's in the Box:

• (1) HI1293D pH electrode

  (1) HI7630 fixed EC probe

  (1) pH 4 sachet (20 mL)

  (1) pH 7 buffer sachet (20 mL)

  (1) 1413 µS/cm calibration solution (20 mL)

  (2) HI700661 cleaning solution sachet

  (1) 12 VDC power adapter
  

• (1) Instructions

Brochure/Datasheet

Instruction manual

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