Combined pH electrode MA920B/1 Back Catalog number: MA920B/1 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended MA840 Polarographic DO probe with 3m cable Price on request SE520 Conductivity/TDS probe with 1meter cable SE520 Price on request HI1143B pH elektroda na fluoridové lázně,Hanna Instruments Price on request