The phrase "a pure source" is correct and usable in written English.
It can be used to describe a source that is untainted, authentic, or free from contamination, often in contexts related to information, materials, or inspiration.
Example: "The researchers relied on a pure source of data to ensure the accuracy of their findings."
Alternatives: "an untainted source" or "a clean source."
"If that is the prevailing mindset of people and this [incident with Jones] prompts them to understand Islam from a pure source, then they will be enlightened.
Scientists have developed a way to produce a pure source of muscle cells, a technique that might one day prove useful for treating muscle-related diseases.
One of the challenges to creating an infrastructure for a fuel cell-based economy is refining a pure source of hydrogen to power vehicles.
For many consumers bottled water, whether a gallon jug of spring water or the latest sparkling water in a designer bottle, is a pristine elixir from a pure source.
The new method also has the flexibility of assessing resource potential for the entire spectrum of mixed lithologies ranging from a complete tight to a pure source rock (organic rich shale/mudstone) reservoir.
Exemplars of the life of reason, they made philosophy "the humanizing quest for the eternal order, and hence it had been a pure source of humane inspiration and aspiration," until the moderns came along and debased it, making it a utilitarian "instrument" and an ideological "weapon".
Surviving piano parts provided the basic outline, but in trying to produce a sound that best represented Arlen's style, he pretty much ignored what documentary evidence there was and consulted a purer source: the ghost of Arlen himself.
The amnion and chorion were obtained from the extraplacental membranes (reflected membranes), which provide a purer source of the fetal membranes compared with those overlying the chorionic plate.
The technique developed by Liquid Light needs a relatively pure source of CO2.
In addition to analytical immunophenotyping, isolation of even very small (malignant) cell populations by multicolor flow cytometry provides a highly pure source for DNA and RNA analyses.
Ceramides are available in two ways: via synthetic synthesis (which normally provides an economical and pure source of ceramides); or from natural sources which, while more biologically similar to those found in human skin, are often more expensive.
