Water Purity Tester, 0.0 to 99.9mS/cm Back Catalog number: HI 98308 Manufacturer: Hanna Instruments Czech Availability: Currently unavailable Price on request - + Recommended MW402 TDS meter MW402 Price on request PH58 pH/ORP/Temp waterproof tester, -2.00 to 16.00 pH Price on request 4090010005 DORP1 Pocket ORP Tester 1.DORP1Meter (battery pre 158,23 €