• Checks soil pH and salinity

  • Checks water pH and salinity

  • Checks correct fertilizer concentration

  • Checks boiler water conductivity

  • Automatic temperature compensation means no thermometers or adjustments

  • Only small amount of soil needed for tests


  • For testing conductivity/salinity only

  • Budget priced

Plant health can be greatly affected by pH (acidic or basic), salinity (soluble salts), and alkalinity, yet these factors are often ignored by growers. It is easy to test for these three important parameters using a portable MyronL AGRI-METER with Soil Test Kit.



Optimum soil pH is essential for obtaining maximum efficiency from fertilizers and herbicides.
This is especially true for artificial growing media which, without buffering capability, are much more pH sensitive than natural soil. In addition, the pH of artificial soils can vary greatly when new, and must be adjusted (leached) before use.



Regular testing of conductivity insures that fertilizer solutions will contain the optimum level of salinity for maximum plant health and growth. If a fertilizer injection system is used, it can be easily checked with an AGRI-METER by taking a sample solution as it comes out of the end of the hose or “spaghetti” irrigation tubes. Proper adjustment of the fertilizer injector can prevent these common problems: over or under feeding, plant damage and fertilizer waste.



Water pH can vary greatly from month to month because of rainfall effect on the aquifer. Irrigation water, if high in soluble salts, can increase soil salinity causing plant damage. AGRI-METER tests water pH and salinity easily and quickly, and readings are given directly in millimhos/conductivity.


The correct pH of water used in pesticide solutions is also important in order to insure maximum effectiveness and prevent pesticide “break down”.



The correct pH of water used in pesticide solutions is also important in order to insure maximum effectiveness and prevent pesticide “break down”.


ALKALINITY tests are critical to proper pH adjustments of water and floral preservative solutions.



Step 1: Rinse AGRI-METER built-in cell cup and fill with sample.

Step 2: Push black button and read conductivity.

Step 3: Push red button of Model AG6/PH and read pH


Both AG-5 and AG6/PH AGRI-METERS are calibrated in millimhos, the term most widely used by growers to express electrical conductivity. Some charts may read in other units called micromhos. However, since one millimho equals 1,000 micromhos, conversion is easy. Parts per million (ppm) is also sometimes used. Conductivity/ppm fertilizer concentration tables can be obtained from your supplier, consultant, or university advisor.


Conductivity Standard Solution: Every AGRI-METER is factory calibrated with a Standard Solution of known Conductivity value (3.9 millimhos/3900 micromhos). Your instrument will be kept most accurate by periodic recalibration with the same type 442-3000 Standard Solution.


pH Buffer Solutions: Available in 4, 7, and 10 pH values; they assure an accuracy of ±0.2 pH units on every test. pH 7 Buffer is especially important, and should be used every two weeks. All Myron L® pH buffers are traceable to N.I.S.T. certified pH references, and color coded for instant identification.


Replacement pH Sensor: Model RPY is a unique non-refillable KCI gel-filled pH combination electrode, featuring a porous liquid junction. Complete installation instructions included.


Additional Information
(includes specs, options & order info)

click here: PDF

Price List

click here: PDF

Operation Manual

click here: PDF


Limited Warranty
Myron L® AGRI-METERS, excluding pH sensor, have a Two (2) Year Limited Warranty. The pH sensor in Model AG6/PH has a Six (6) Month Limited Warranty. If the instrument fails to function normally, return it to the factory prepaid. If, in the opinion of the factory, failure was due to materials or workmanship, repair or replacement will be made without charge. A reasonable service charge will be made for diagnosis for repairs due to normal wear, abuse or tampering. Warranty is limited to the repair or replacement of the MyronL AGRI-METER only. The MyronL Company assumes no other responsibility or liability.



                      Site last updated on: 30-Apr-2008 

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