Measurement of biocide residuals It is often very beneficial to know how much the process contains biocide residuals, because biocides are reactive chemicals and their efficacy depends on the properties of the process to be treated. In a clean water with low amount of organic substances, low dosages (for example, 0.5 ppm hypochlorite as active
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Measurement of biocide residuals
After reading this article you will..
- understand that measurement of biocide recidual enables optimisation of biocide dosing.
- know that some oxidising biocides are rather easy to measure directly from process samples .
- know that the measurement of non-oxidising biocides requires usually advanced analytics. It can be done in a well-equipped laboratory, for example, in order to verify food-contact compatibility of a dry paper product.
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Authors & references
Authors:
Jaakko Ekman and Marko Kolari, Kemira Oyj
References:
- Harp DL. (2002) Current technology of chlorine analysis for water and wastewater. Technical Information Series – Booklet No. 17. Hach Company. [Online] Available from: https://www.hach.com/cms-portals/hach_com/cms/documents/pdf/LIT/L7019-ChlorineAnalysis.pdf [Accessed 16th December.2019]
- Bundesinstitut für Risikobewertung. Database BfR Recommendations on Food Contact Materials, BfR XXXVI.Paper and board for Food Contact. 2017. [Online] Available from: https://bfr.ble.de/kse/faces/DBEmpfehlung_en.jsp. [Accessed 16.th December 2019].
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This page has been updated 15.11.2020
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