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Hanover / Oldenburg (dpa / lni) - The Lower Saxony State Parents' Council has renewed its requirement for air filter systems and partition walls for classrooms.
The committee complained that the measures currently decided in schools only promise short-term success.
The old high school in Oldenburg acquired mobile air filter systems in December.
There were no corona cases at the school, said a spokeswoman on Thursday.
"The devices have done their job."
How many schools in Lower Saxony have so far had mobile air filter systems such as the Oldenburger Gymnasium, the Ministry of Education in Hanover has not yet been able to provide any information.
In mid-November, the state government announced that it would provide 45 million euros for further measures at the schools such as assistants to relieve the burden, FFP2 masks for teachers or, in justified exceptions, air filter systems and Plexiglass protective walls.
How many schools have applied for funding from the new program so far has not yet been learned from the ministry.
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The German Aerospace Center in Göttingen tested a ventilation concept with a filter system at the end of 2020.
Result: The virus load in rooms decreased.
"As fluid dynamics researchers, we see great potential in the concept and consider it better than window ventilation," said test manager Andreas Westhoff from the Institute for Aerodynamics and Fluid Mechanics there.
The concept, borrowed from space travel and medicine, can easily be retrofitted in rooms.
With the so-called vertical ventilation concept, fresh air flows out on the floor, is extracted from the ceiling and, after filtering, blown out again on the floor.
In this way, the virus-contaminated aerosols contained in the air we breathe cannot spread uncontrollably in the room.
Press release DLR Göttingen on air filter study