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           Click to read about pH/conductivity on your printing press
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pH meters measure acidity/alkalinity.  These units are accurate enough for testing the pH of fountain solution of printing presses, yet inexpensive enough to use at work or home for testing soil, water, food service compliance with HACCP regulations,  tropical fish aquariums, aqua culture,hydroponic gardening and farming, winery/brewery process control, and swimming pools.  They are even used by sushi restaurants to make sure the rice meets health department guidelines!
HINTS:   To test the pH of soil in gardens and lawns, mix two parts of distilled or de-ionized water per part of soil, let the solids settle to the bottom, and measure the pH of the solution at the top.  To test rice, add enough distilled or de-ionized water to make the rice moist enough to measure.  When checking cooked food, allow it to cool to room temperature, so the pH bulb will last longer.  In such instances, a temperature compensating meter, such as the HI98127 or HI98128 will give more accurate readings.

Conductivity meters measure either electrical conductivity (EC) as expressed in "micro-siemens" or total dissolved solids (TDS) expressed in parts per million (ppm), so you can determine solution strength without regard to "buffers" and other chemical agents added to maintain pH.  Conductivity is important for water conditioning and treatment, environmental, and electro-plating applications.  In hydroponic gardens and farming, greenhouses and aqua culture, measurement assures the proper level of fertilizer is being dosed. 

All units are rugged, pocket-size, battery operated (batteries are included), and have LCD displays.  They measure  directly with no need to remove messy samples.

Call or e-mail for information about hand-held and bench-top laboratory meters for professional applications, or visit the Hanna Instruments website:  www.hannainst.com

• HI99104:  Brand-new economical pH meter measures full scale pH (0.00 - 14.00), 2 point calibration, ±.2 pH accuracy, resolution 0.01 pH, battery life 1,000 hours, $35!
  (Click for more information.)

• HI98107:  Brand-new updated version of the popular pHep 96107 pH meter measures full scale pH (0.0 - 14.0), 2 point calibration, ±0.1 pH accuracy, resolution 0.1 pH,battery life 700 hours, $45!
  (Click for more information.)
  HI98108:  Same specs as above HI98107, but with the addition of automatic temperature compensation (ATC),  $49

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• HI98151 pHep-1: Waterproof pH meter measures full scale pH (0.0 - 14.0), 2 point calibration, ±.1 pH accuracy, resolution 0.1 pH, battery life 350 hours, $55. 

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• HI98103 Checker-1:  Economical pH meter measures full scale pH (0.00 - 14.00), water resistant, 2 point calibration, ±.2 pH accuracy, resolution 0.01 pH, battery life 3,000 hours, $35.
  (Click for more information)

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• HI98353 DiST-3:  Waterproof conductivity meter measures EC from 10 - 1,990 µS, automatic temperature compensation, ±2% of full scale, new lower price, $60.
• HI98354 DiST-4:  As above, but range 10 - 19.90 ms, $60.
  
  (See below for calibration solutions!)  

• HI 98129 Combination pH / EC / TDS / Temperature (Click for full specs)

 

The brand new HI-98129 pocket-sized combo meter gives you four readings with one instrument:  pH, EC (conductivity), TDS (total dissolved solids), and temperature, all in a rugged, waterproof meter. Reads full scale pH 0.00 - 14.00 (accuracy µ0.01, resolution 0.01), EC from 0 - 3,999 µS (accuracy ±% full scale, resolution 1 µS), TDS from 0 - 2000 ppm (accuracy ±2% full scale, resolution 1 ppm) and temperature in Celsius or Fahrenheit.  An incredible bargain at only $158!

• HI 98130 pH / High Range EC / TDS / Temperature (Click for full specs)
  As above HI 98129, but reads EC from 0 - 20 mS (0 - 20,000 µS) with accuracy ±2% full scale, resolution 0.01 mS, TDS from 0 - 10 ppt with accuracy ±2% full scale, resolution 0.01 ppt), for the same low price of $158
  
  
• HI 9811-5 Combination pH / EC / TDS / Temperature Meter (Click for full specs)
  NEW!!  Why pay $500 for a laboratory instrument?  Our new hand-held meter measures pH, EC (conductivity), TDS (total dissolved solids), and temperature in centigrade, using a single remote probe with a 40 inch cable.  Powered by a 9 volt battery.  It reads full scale pH with automatic temperature compensation, and EC from 0 - 6,000µS, TDS from 0 - 3,000 ppm, temperature from 0 to 70 degrees C, for the special price of $200.
  

• HI98127 (pHep-4) pH / Temperature (Click for full specs)

  

The HI 98127 reads full scale pH 0.0 - 14.0 (accuracy ±0.1 pH with resolution 0.1) and temperature in both Fahrenheit and Centigrade, in a pocket-size waterproof meter for only $85.


• HI 98128 (pHep-5) pH / Temperature (Click for full specs)
  HI 98128 as above, but accuracy of ±0.05 pH and resolution 0.01 for greater pH precision, $97.
  
  HI 98311 (Dist-5) EC / TDS / Temperature (Click for full specs)

• HI 98311 reads EC in the range from 0 - 3,999 µS (accuracy ±2% full scale, resolution 1µS), TDS from 0 - 2,000 ppm (accuracy±2% full scale, resolution 1ppm) and temperature in both Fahrenheit and Centigrade.  Only $98.

 
• HI98312 (Dist-6) EC / TDS / Temperature
  Same as above, but the HI 98312 reads EC in the range from 0 - 20 millisiemens (20,000 microsiemens), as well as temperature.  Only $98. 

• HI991401 (GroChek) pH / Temperature Continuous Monitor (Click for full specs)
  The new HI-991401 has a large backlit LCD to display continuous monitoring of both pH and temperature with a dual level display.  There's no need to worry about batteries, thanks to a 12 VDC adapter included with the unit, $102.
   
• HI991404 (GroChek) pH / EC / TDS / Temperature Continuous Monitor (Click for full specs)
  The HI991404 utilizes a dual-level display for pH, EC, or TDS and temperature for continuous monitoring of the three most important parameters for hydroponics, agriculture and other applications.  Powered by a 12 VDC adapter, included with the unit, $185.
  
  
• HI981504/5 pH/TDS.Temperature Continuous Monitor (Click for full specs)
  The HI981504/5 is the latest in continuous monitors and features three back-lit LCD's for continuous display of pH, TDS and temperature, powered by a 12 VDC adapter, included with the unit.  This unit is recommended for use in the vicinity of electronic lighting ballasts, $199.
  

Click here for information and pricing on pH, conductivity, storage and cleaning solutions