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 HI1230B Kombinovaná pH elektroda s pl.tělem a gel. elektr. Price on request HI1043B Refillable Double Junction pH Electrode Price on request MA9305 Pack of 100 x 1.4V batteries. Price on request