Perform fast, accurate in-field tissue sap testing on your crops. Use the Cardy Nitrate Meter for soil testing and measuring nutrient solutions.

Cardy Ion Meters bring microprocessor technology to the field for on-site nutrient measurement and instant management decisions. Exceptionally small and portable, Cardy meters literally put the power of routine nutrient monitoring right in your hands!

The Cardy's unique, flat sensor allows you to conveniently and accurately measure small samples. The sensor is stored dry and is field-replaceable.

The accuracy of these affordable meters correlates well with laboratory analysis with automatic range switching from 0 to 9,900 ppm. Note: Soil test kits (with meters) include materials for 15 tests.

Speed up collection of large samples with our Hydraulic Plant Sap Press.

Click to view the University Guidelines for optimal nitrate-nitrogen concentrations.
Click to view the UC-Davis Vegetable Guidelines for Drip-Irrigated Vegetables
Click to view the Comparing the Accuracy of the Cardy Portable Nitrate Meter
Click to view the Nitrates in Forage Cause Cattle Deaths
Click to view the Quick Nitrate Test for Hybrid Sudangrass & Pearlmillet Hays
Click to view the Cardy Ion Meter user manuals.