Water quality testing. Man determining water characteristics by comparing the color of liquid in testing vials with attached color scales

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alkalinity ammonia analyze aquarium background carbonate check chemical chlorine closeup color compare container content control define determine drinking ecology environment examination freshwater glass hand hardness health home indicator kit laboratory liquid maintain male man measure monitoring nitrate ph pollution pool quality reagent safety scale set technology test vial water white
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  • Published on Nov 09, 2022
  • Photo type JPG
  • Category Technology