A unique report on the testing of desludging equipment. We present the findings of nine-months field work in Malawi on desludging of sometimes difficult to access pit latrines with sometimes solid sludge.
Three types of desludging equipment were tested:

• A vacuum-operated machine with an integrated high-pressure pump for fluidizing sludge and an 800 litres holding tank (called ROM 2).
• A vacuum-operated machine with a 500 litres holding tank (called Vacutug Mk2).
• A diaphragm sludge pump.

There is a summary and a full report that can be downloaded.