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 18901193 PH6.86 250mL 6.86pH, one bottle 320,00 Kč 18901208 12.85mS/cm 250mL Conductivity Solution, one bottle 500,00 Kč 18901201 PH9.18 500mL 9.18pH, one bottle 500,00 Kč