What is BS EN 16161 — Vivo absorption technique about? 
BS EN 16161 provides guidance in the use of in vivo absorption techniques to quantify chlorophyll-a concentration in marine and fresh waters.
BS EN 16161 is comprised of the following:
- Definition of the equipment requirement
- A priori data and mathematical tools
- Recommendations for verification of measurement system performance and consideration of factors that can influence measurements
- Listing of the procedures to be implemented
Who is BS EN 16161 — Vivo absorption technique for? 
BS EN 16161 on the Vivo absorption technique is useful for: 
- Wastewater collecting systems 
- Wastewater treatment plants 
- Plants treating industrial wastewater 
- Water supply treatment plants  
Why should you use BS EN 16161— Vivo absorption technique? 
Chlorophyll-a concentration can be determined by sampling and laboratory analysis using the techniques described in ISO 10260. Achieving consistent results with this technique requires careful attention during the various steps of the process commonly used, such as during sampling, transport, filtering, freezing, storage and extraction and subsequent pigment estimation.
BS EN 16161 provides methods and guidance for the use of the vivo absorption technique for estimating the chlorophyll-a concentration in marine and freshwater samples.
BS EN 16161 provides you with apparatus, sampling, transport, storage, and preparation of test pieces, preparation of reagents and apparatus, pre-treatment of test pieces, test procedure, and much more.
The test methods and procedures provided by BS EN 16161 assist you in the determination of chlorophyll-a concentration in water and ensure reducing the risk of severe health issues.
With obedience and compliance to BS EN 16161, you can enhance the efficacy of the water and manufacture a standardized product.
