Production and quality assurance

Allergen extract quality is a crucial factor in treatment success. That is why Diater has modern facilities, which opened in 2006. These facilities cover more than 4,000 sq m and boast new and innovative equipment that ensures that the entire process is comprehensively controlled. Implementing Good Manufacturing Practices and first-class technology ensures that our products are of the highest quality.

Our plant has 4 distinct production units: beta-lactam antibiotics, allergen extracts for diagnosis and treatment, microbiology and in vitro diagnosis.

Furthermore, Diater has its own mite culture, which streamlines the entire process and ensures that our treatments are of the highest quality.

Coordination and teamwork between R&D and manufacturing ensure that our production processes are as efficient as possible.


We hereby inform you that the personal data submitted by you shall be processed by GRUPO FERRER INTERNACIONAL S.A., whose registered address is at Av. Diagonal 549, 5ª planta, 08029, Barcelona (Spain), so that it may maintain and handle its relations with you, as well as to respond to any queries you may submit to us. 

Your personal data shall be stored for 1 year since you submitted your first query.

All personal data processed is based on you having given your consent to do so. You are reminded that you may withdraw your consent at any time.

You may exercise your rights of access, rectification, erasure, restriction of processing, portability of data, as well as to submit any queries or suggestions in respect of the processing of personal data by writing to the Data Protection Officer using any of the following means, along with a copy of your ID document or other means of identification:

(i) By email to

(ii) By post addressed to GRUPO FERRER INTERNACIONAL S.A. Av. Diagonal nº 549, 5ª planta, 08029, Barcelona.

You are entitled to submit complaints to the Spanish Data Protection Agency (AEPD), the competent authority on data protection matters by writing a letter to its central offices.

Link to the privacy policy

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