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 18901182 DREF01 Reference electrode 500,00 Kč SE300 Double junction orp platinum electrode SE300 Price on request MA915B/2 pH glass electrode for with 2meter cable. Price on request