pH elektroda HI73127 pro pHep testery Back Catalog number: HI73127 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended 18901211 12.88mS/cm 250mL Conductivity Solution, one bottle 20,31 € 18901206 146.6μS/cm 250mL Conductivity Solution, one bottle 20,31 € MC510 ORP controller MC510 Price on request