Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Aug 6;849:157869. doi: 10.1016/j.scitotenv.2022.157869

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2022 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

PMC Copyright notice

Fig. 3 — Results of recovery of (A) murine norovirus (MNV) as a molecular process control (MPC) and (B) murine hepatitis virus (MHV) as a whole process control with or without polytetrafluoroethylene (PTFE) pre-filtration +, sample processed with pre-filtration; −, sample processed without pre-filtration. Recovery efficiencies (%) respectively were measured in influent 1, influent 2 and effluent samples (n = 3). Error bars indicate standard deviations. *p < 0.05, **p < 0.01, ***p < 0.005, N.S., no significant difference.