adding chemicals

Dutch authorities had no legal basis for adding chemicals to drinking water if they did not improve the safety as such.

How can we produce clean water without adding chemicals to it, which we are reluctant to do.

Many cities are now adding chemicals to drinking water to reduce leaching of lead from the pipes.

Since this process involves adding chemicals into the ground, it is only done in sites where the ground water has already been contaminated.

Spent fluids can be separated into organic and aqueous fluid by adding chemicals.

This is ongoing leakage of a chemical, and adding chemicals to stop the chemicals.

"Thomas, just once before I die, I want to see water that you can drink without adding chemicals to it.

Salt producers have created nonsticking salt before by adding chemicals to prevent binding.

In molecular terms, the on position amounts to adding chemicals known as phosphate groups to other entities in the cell.

Altering the gas composition by adding chemicals can lower the hydrate formation temperature and/or delay their formation.

The mud pits let the drilled "fines" settle; the pits are also where the fluid is treated by adding chemicals and other substances.

Adding chemicals to neutralize the wastes increased their volume and made some of the material fall to the bottom in a sludge that is now difficult to handle.

Mr. Uber added, "While it's important to know the number of gallons when adding chemicals, for planning the number of fish, the surface area is really more important."

Other methods include adding antibiotics to feed, adding chemicals into water for treatment baths and biological control, such as using cleaner wrasse to remove lice from farmed salmon.

In the decades of production, the Government sought to minimize the volume of waste by adding chemicals that would combine with the most radioactive material and sink to the bottom of the tank.

So while armed guards patrol the upstate reservoirs to make sure terrorists aren't adding chemicals or poisons, there's also a standing army of lab techs making sure the water is still clear.

Doctors detect malaria by taking a drop of a patient's blood, smearing it over a glass slide and adding chemicals to stain the parasites before examining the slide under a microscope.

In the last three or four years, the city's Department of Environmental Protection has been adding chemicals to the water to reduce acidity and corrosiveness, said Sanford Evans, a department spokesman.

Some systems listed in an earlier survey as having high lead levels, including New York City's, showed improvement by changing the chemistry of the water or adding chemicals that coat the insides of pipes.

The utilities favor faucets that do not let much lead into the water, because if there is too much lead in water, they must go to the expense of adding chemicals to reduce the concentrations.

To clone, scientists subject eggs and embryos to some pretty harsh treatment, including adding chemicals and dyes; poking, prodding and pulling on the eggs; and subjecting them to electric shocks.

Mr. Yates said a top research goal was to find ways of separating metals out while the bath was still in operation by adding chemicals that would combine with them and have them precipitate out of solution.

Beginning four decades ago, aircraft makers and the federal aviation authorities embarked on a program to explore the possibility of adding chemicals to jet aviation fuel to prevent it from forming a fine mist and mixing with air.

Treatment to prevent leaching of lead from old pipes or solder, as required by the Federal Government, will entail adding chemicals, such as a polyphosphate compound, to alter the Ph of water, which normally is slightly acidic.

"We don't want to begin adding chemicals to the ecosystem if simple, preventative measures can be used instead," she said, adding that the county had tested 189 dead birds and more than 25,000 mosquitoes this year, without finding any West Nile infections.