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This quick reference guide is a supplement resource for the Know Your H2O water quality testing kit. The guide takes you step-by-step through basic procedures for measuring dissolved oxygen and temperature using the YSI Pro 20i dissolved oxygen meter and pH using an EcoSense pH pen. It also provides testing procedures for La Motte chemical tests to measure alkalinity, ammonia, nitrate, nitrite, iron, and phosphate levels in water.
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