# What is the detection limit for ISE25F (E41M007)?

## Document ID

Document ID TE11127

Version 2.0

Status Published

## Published Date

Published Date 03/08/2019
Question
What is the detection limit for ISE25F (E41M007)?
Summary
The estimated detection limit is 10 -6 M.
The detection limit is defined by the cross-section of the two extrapolated linear parts of the ion-selective calibration curve. In practice, detection limit on the order of 10-5-10-6M is measured for most of ion-selective electrodes. The observed detection limit is often governed by the presence of other interfering ions or impurities.

The concentration range is: 5 x 10 -6 to 1 M F- (0.01 to 20000 ppm)
The estimated detection limit is: 10 -6 M.

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