Sada pufrů pH 4,01; pH 7,01; pH 10,01 Back Catalog number: HI54710 Manufacturer: Hanna Instruments Czech Availability: In the manufacturer's stock Price on request - + Recommended MA921B/2 Double junction ORP platinum electrode MA921B/2 Price on request 18901203 PH10.01 500mL 10.01pH, one bottle 19,90 € 18901219 222mV ORP 250mL, 222mV, ORP standard solution, one 31,04 €