21.   Health officers test drinking water quality daily in the flooded areas, and call on residents to use only tap water.

22.   Normally, monkeys have to be used to test the quality of batches of vaccines because the virus does not affect mice.

23.   The association is a non-governmental organization that works to promote the interests of consumers and shoppers by monitoring and testing the quality of goods and services.

24.   To test the quality of phone conversations, we called several numbers in various locations around the globe.

25.   Torres said hazardous materials teams were at the scene and representatives of the Maryland Department of the Environment tested air quality.

26.   Wanchai said the company has contacted the Medical Sciences Department to test the quality of the water and issue a guarantee that it is absolutely clean.

27.   The feud was sparked off by an NOC announcement that it would test the quality of stocks held by dealers.