Chapter 8: Laboratory procedures and methods for characterisation of faecal sludge – Method 8.6.5.1. In Velkushanova K., Strande L., Ronteltap M., Koottatep T., Brdjanovic D., Buckley C. Eds. (2021) Methods for Faecal Sludge Analysis, IWA Publishing, London, UK. ISBN 9781780409115.