
 HANNA Instruments HI 99121N Direct Soil pH Meter with Special Electrode, HI99121N, HI 99121, HI99121 The HI 99121 kit has been designed to address the question of correct and rapid measurement of pH directly in soil. Every item in this kit has been made to facilitate measurements in the field without compromising accuracy. With HI 99121 you can test the pH of soil directly or after preparation of a diluted sample. In order to measure the pH directly, the kit includes a plastic auger to perforate the ground. The HI 1292D pH electrode has been designed for direct soil measurement. It has a conic, rugged tip and can be directly inserted in moist or soft soil. The electrode incorporates a temperature sensor right near the tip to enable it to measure and quickly compensate for temperature. For higher degrees of accuracy, or for stony ground where the electrode may be damaged, use the specially made HI 7051M soil preparation solution. This solution is included in the package to help you measure pH more precisely by dilution. The dual-level LCD shows the pH value from -2 to 16 with 0.01 resolution. It simultaneously displays the temperature on the secondary level. With a menu-driven custom microprocessor, the user is helped with clear prompts during operation and calibration. Regular price: $369.00 Sale price: $325.00 | 
 HANNA HI 993310 Soil conductivity/salinity meter with carrying case HI993310 *** This item is in stock and will be shipped in 1 day! HI 993310 is an instrument that has been specifically designed to address the need for correct and rapid conductivity measurements in soil and liquids. It is supplied with two probes: HI 76305 with a stainless steel, conical tip for direct soil measurement, and HI 76304 for fertilizer enriched solutions. HI 993310 measures both the soil conductivity in EC (mS/cm) as well as salt activity in grams per liter. The different scales can be selected through two keys on the front mask and two separate LEDs indicate which parameter is being tested. In addition, HI 993310 is equipped with an alarm LED that automatically turns on if the soil is too dry, or nutritive substances such as potassium or nitrogen are lacking. In the former case, demineralized water is to be added to the soil prior to proceeding with further tests. Direct soil measurement is facilitated by the small diameter, stainless steel, pointed HI 76305 probe. Once inserted into the ground, the user simply waits until the meter displays the value read by the auger-like probe. Regular price: $477.00 Sale price: $395.00 |