Water quality parameters (i.e., temperature, pH, conductivity, and dissolved oxygen) were measured using the Orion Star A325 pH/conductivity portable multiparameter meter (Thermo Scientific; catalog no. STARA3250). Total chlorine was measured using U.S. Environmental Protection Agency (U.S. EPA)-approved Hach method 8167 with DPD total chlorine reagent powder pillows (Hach; catalog no. 2105669). Reactive orthophosphate was measured using U.S. EPA-approved Hach method 8048 with PhosVer 3 phosphate reagent powder pillows (Hach; catalog no. 2106028). Nitrogen species, including ammonium, nitrate, and nitrite were measured using the nitrogen-ammonia reagent set (method 10023; Hach; catalog no. 2604545), NitraVer X nitrogen-nitrate reagent set (method 10020; Hach; catalog no. 2605345), and NitriVer 3 TNT reagent set (method 10019; catalog no. 2608345), respectively. All Hach measurements were performed in triplicate on the DR1900 portable spectrophotometer (Hach; catalog no. DR190001H) (Table S1).
Orion star a325 ph conductivity
Manufactured by Thermo Fisher Scientific
The Orion Star A325 pH/conductivity meter is a laboratory instrument designed to measure pH and electrical conductivity. It features an easy-to-read LCD display and is capable of performing both single-channel pH and conductivity measurements.
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2 protocols using orion star a325 ph conductivity
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Water Quality Analysis Methods
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Water Quality Analysis Methods
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Water quality parameters (i.e., temperature, pH, conductivity, and dissolved oxygen) were measured using the Orion Star A325 pH/conductivity portable multiparameter meter (Thermo Scientific; catalog no. STARA3250). Total chlorine was measured using U.S. Environmental Protection Agency (U.S. EPA)-approved Hach method 8167 with DPD total chlorine reagent powder pillows (Hach; catalog no. 2105669). Reactive orthophosphate was measured using U.S. EPA-approved Hach method 8048 with PhosVer 3 phosphate reagent powder pillows (Hach; catalog no. 2106028). Nitrogen species, including ammonium, nitrate, and nitrite were measured using the nitrogen-ammonia reagent set (method 10023; Hach; catalog no. 2604545), NitraVer X nitrogen-nitrate reagent set (method 10020; Hach; catalog no. 2605345), and NitriVer 3 TNT reagent set (method 10019; catalog no. 2608345), respectively. All Hach measurements were performed in triplicate on the DR1900 portable spectrophotometer (Hach; catalog no. DR190001H) (Table S1).
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