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 MA923B/3 Redox Epoxy electrode MA923B/3 Price on request MA911B/2 Double junction pH electrode MA911B/2 Price on request MA916B/3 Combined glass pH electrode, refill, BNC, 3m Price on request