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LAQUAtwin B-741 Compact Nitrate Ion Meter (Crop Kit)
LAQUAtwin B-751 Compact Calcium Ion Meter
LAQUAtwin B-743 Compact Nitrate Ion Meter (General Purpose)

LAQUAtwin B-743 Compact Nitrate Ion Meter (General Purpose)
HOR3200456569

NO3-: 62 to 6200 ppm (mg/L); (10-3 to 10-1 mol/L); Or as NO3--N: 14 to 1400 ppm (mg/L)
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LAQUAtwin B-742 Compact Nitrate Ion Meter (Soil Kit)
LAQUAtwin B-731 Compact Potassium Ion Meter
LAQUAtwin B-722 Compact Sodium Ion Meter