Instrument Directory

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The Combo HI 991404 EC meter is designed for continuous, high accuracy pH, EC/TDS and temperature measurements. These microprocessor indicators continuously monitor the three most important nutrient parameters in hydroponics, greenhouses and horticultural applications with a single instrument. These indicators feature a large, dual-level, backlit LCD to give you instantaneous readings of pH, EC or TDS and temperature, even from a distance.At startup, these indicators perform a self-check to assure proper working condition. HI 991404 stability indicator and hold features prompt the user when to take the reading and freezes the display for easy and accurate recording.

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Am J Public Health

Ann Chim

Ann Ig

Appl Environ Microbiol

Aquat Toxicol

Arch Environ Contam Toxicol

Bull Environ Contam Toxicol

Cad Saude Publica

Can Commun Dis Rep

Chemosphere

Commun Dis Rep CDR Wkly

Ecotoxicology

EDTNA ERCA J

Environ Int

Environ Manage

Environ Pollut

Epidemiol Infect

Gen Dent

Genetica

Gig Sanit

J Environ Monit

J Health Popul Nutr

J Immunoassay

Med Health R I

Mil Med

Nephrol Dial Transplant

Nephrol News Issues

Phys Rev Lett

Psychopharmacology (Berl)

Rev Biol Trop

Rev Panam Salud Publica

Salud Publica Mex

Schriftenr Ver Wasser Boden Lufthyg

Sci Total Environ

Southeast Asian J Trop Med Public Health

Vet Clin North Am Food Anim Pract