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The phrase "there are certain materials" is correct and usable in written English.
You can use it when discussing specific types of materials in a context, such as in scientific, educational, or technical writing. Example: "In this experiment, there are certain materials that are essential for achieving accurate results."
Exact(1)
There are certain materials that can help minimize the amount of UV rays that penetrate your child's skin while she is wearing the suit.
Similar(59)
There's certain materials I use in other vineyards that will target a specific species, but they won't hurt anything else in terms of beneficial predators.
There are certain synthetic materials that don't breathe very well unless they've been specifically designed for that purpose (like polyester blends).
This does not mean that there are items in all categories — though a painting by Trump would be something to see — but there do seem to be certain materials, referred to in the agreement as "the Property," that Clifford agreed both to hand over and to assign the "intellectual property rights to DD".
For example, there are certain minimum unavoidable material requirements for growing food, and there are limits to making automobiles, houses, furniture, and other products lighter and thinner without the risk of losing their necessary functions.
Obviously, there are certain limits: if the material is obscene or extremely objectionable".
I'm writing just because there are certain kinds of raw material.
Each type has its own individual characteristics, and for each there are certain kinds of suitable dramatic material.
However, despite the extensive research on bioconversion of cellulosic material, there are certain technological barriers.
If you are feeling down, it is probably because you feel that there are certain things, whether they are material or not, missing in your life.
However, there are certain limitations in the preparation of this material in a pure and usable form.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com