Can dilution water be prepared without using Hach Nutrient Buffer Pillows?

Document ID

Document ID TE3226

Version

Version 5.0

Status

Status Published

Published Date

Published Date 01/31/2019
Question
Can dilution water be prepared without using Hach Nutrient Buffer Pillows?
Summary
Dilution Water Makeup without powder pillows
Answer
To prepare dilution water by the conventional method, pipet 1 mL of each of the following solutions per liter of distilled water at 20 °C: Calcium Chloride Solution for BOD, 500 mL (Product #42849), Ferric Chloride Solution for BOD, 1 L (Product #42953), Magnesium Sulfate Solution for BOD, 500 mL (Product #43049) and Buffer Solution, Phosphate, for BOD, 500 mL (Product #43149). Cap the bottle and shake vigorously for one minute. The Phosphate Buffer Solution should be refrigerated to decrease the rate of biological growth. Use care with all solutions to avoid contamination.
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