The phrase "apparatus is needed" is correct and usable in written English.
It can be used when indicating that a specific device or equipment is required for a task or process.
Example: "In order to conduct the experiment successfully, the apparatus is needed to measure the temperature accurately."
Alternatives: "equipment is required" or "device is necessary."
Many say that a core apparatus is needed to spur mass demand for electric vehicles.
In addition, the LAMP method is carried out under isothermal condition, therefore no special apparatus is needed.
I gave away the exploding colon story, so I won't go into all the details about what sort of technical apparatus is needed for speech.
Unlikely: a lot of apparatus is needed to launch a Scud, and weapons experts believe that few terrorists could rise to the challenge.
What kind of modelling apparatus is needed to resolve such questions?
An automated apparatus is needed to assure production efficiency and minimize the radiation exposure by PET isotopes.
Inevitably, as the mysteries of nature become ever more subtle, more complex apparatus are needed to penetrate them, and big science is the order of the day.
*For example, if an air purifying respirator or self-contained breathing apparatus are needed, personnel must be enrolled in the Respiratory Protection Program and attend annual training and fit-testing.
The RT-LAMP was performed under isothermal conditions at 63 °C and no special apparatus was needed, which rendered the assay more economical and practical than real-time PCR in such developing countries, like Sudan.
Caution: Eye protection, skin protection, and a breathing apparatus are needed for sanding.
It is obvious, that very different separation principles and a huge variety of highly specialized apparatuses are needed to solve all separation problems in such different areas of application.
