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 MA918B/1 Comb glass pH electrode 3 dia, DJ,refill, BNC, 1m Price on request MA905B/3 Combination pH electrode MA905B/3 Price on request MA919B/1 Glass pH electrode, refillable, BNC, 1m Price on request