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Factory wholesale digital seawater salinity meter electronic hydrometer aquaculture TDS test pen EC meterfrom 297 923 som/monthот 2,482,688 so'm
On-line PH redox potential tester temperature electrode induction probe PH detectorfrom 259 554 som/monthот 2,162,948 so'm
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EC-1382 pen conductivity meter water quality test pen portable EC meter water hardness testerfrom 45 140 som/monthот 376,165 so'm
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Digital Redox Controller Display Acid-Base and Oxidation Online pH Meter ORP-206from 293 409 som/monthот 2,445,072 so'm
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