Document
Chemical Testing Practice Lesson Plan (DWQT)
This lesson plan describes and demonstrates various chemical testing methods using the colour comparator, and optionally, digital meters, photometers pooltester kits and/or other available equipment.
Document
Chemical Testing Practice Lesson Plan (DWQT)
This lesson plan describes and demonstrates various chemical testing methods using the colour comparator, and optionally, digital meters, photometers pooltester kits and/or other available equipment.
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CAWST is a Canadian charity and licensed engineering firm. We address the global need for safe drinking water and sanitation by building local knowledge and skills on household solutions people can implement themselves.