The phrase "used for preparing" is grammatically correct and can be used in written English.
Example: This kitchen knife is specifically designed and used for preparing vegetables.
The optimized process parameters were used for preparing all further batches, including preparation of coated beads.
Double distilled water was used for preparing solutions.
Graphene oxide (GO) has been used for preparing graphene materials.
Deionized water was used for preparing all the aqueous solutions.
An adsorbent muffle furnace (PTC1, Paragon made) was used for preparing SCC.
Many precursors are used for preparing activated carbon (Patel et al. 2015).
They are also used for preparing dyes such as azo dyes, sulfur dyes and fur dyes.
Nanoparticles used for traditional nanofluids are the same with those used for preparing functionalized nanoparticles.
Distilled water was used for preparing all aqueous solutions (Zolal, Tehran, Iran).
Ultrapure water (≥18.2 MΩ cm) was used for preparing aqueous solutions.
In our experiment, the coffee ring effect was controlled and used for preparing silver nanoparticle films.
