"samples of water" is a correct and usable phrase in written English.
It is used to refer to small amounts of water that are collected for testing or analysis. Example: The scientist took samples of water from different sources to determine the levels of contamination in the local river.
Scientists were taking samples of water and seafood to ensure food safety.
Hydrologists use samples of water and soil, which they have traditionally collected themselves by wading out into a river or lake.
But his real revelations came when he trained his lenses on samples of water that he had collected from a nearby lake, from a pot outside his house, from the canals of Delft, and elsewhere.
On the way back up, they choose when to close the Niskin bottles (previously open at both ends) and so they can bring back samples of water from different depths.
In the kitchen cabinets, there were old balsamics and samples of water from all over the world, which Ottolenghi, researching for a special project, had tasted only after a twenty-four-hour fast.
The team will collect samples of water and marine life at different depths and will look for oil, dispersants and tar balls in the water column.
At of the end of January, the government said its scientists alone had taken 35,000 images, walked more than 4,000 miles of shoreline and culled more than 40,000 samples of water, sediment and tissue.
They collected the first samples of water from the lake itself in early 2013.
Samples of water, AW, and fish were collected at different times to determine HM concentrations.
The method was applied for lead determination in real samples of water, tea, soil and dust.
The samples of water and filtrates were stored in a freezer until analysis.
