What are the differences between the various types of Hach test kits?

Document ID

Document ID TE6463

Version

Version 4.0

Status

Status Published

Published Date

Published Date 08/16/2018
Question
What are the differences between the various types of Hach test kits?
Summary
Choosing the right test kit
Answer
Test strips are very inexpensive. They are semi-quantitative.

Color wheel tests are can be moderately inexpensive, depending on the test. The measurement accuracy is ± 1/2 step (out of 5 steps).

Drop count titration tests are inexpensive. The measurement accuracy is ± 1 drop (tests typically use 10-20 drops).

Digital titration tests are more expensive. The measurement accuracy is ± 1% or ± 1 digit.

Instrument- based tests are more expensive. The measurement accuracy is ± 2%.

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