About us

Since 2018, Aristoteles Consulting offers indoor air quality investigations and air quality testing in residential, commercial, institutional, and manufacturing environments.

The company was set up by a team of geoscientists with a versatile background in sampling and micro analytics, mining, climate modeling and data management.

Since 2022, Dr. J.M. Warnsloh is managing director and principal air quality consultant.

The company is based on the belief that our customer’s needs are of the utmost importance. Our team is committed to meeting those needs.

Aristoteles Consulting is an independent company.

Independent means that we do not belong to any group of companies whose products or services we want or have to sell after an investigation. This may result in our services being more expensive than those of our competitors.

We only carry out examinations (of the indoor air) and strive to find the cause of the complaints with the methods used.

We leave the elimination of the causes to other companies that are specialized in this area.

Our Vision

Clean Indoor air for everybody, at home, at work and in community spaces.

Our Mission

Improve the health and lives of people, in all buildings, everywhere, every day.

Our Objectives

Through continued education, technological improvement, targeted testing methods and unparalleled customer service, we strive to help create natural, healthy environments for our clients and the communities we serve.

Dr. J.M. Warnsloh – Managing Director

Dr. Jens M. Warnsloh is a mineralogist / economic geologist and air quality expert. During his years as a researcher (1999 – 2009) he worked with radioactive minerals and as head of an X-ray laboratory (2005 – 2009) he was responsible for the radiation safety of his employees.

As a self-employed economic geologist (since 2009), he frequently came into contact with (fine) dust pollution in mines during exploration projects in the mining industry, which sparked his interest in air quality and its studies in association with workplace pollution. Since 2017, he has been continuously educating himself by attending various courses at internationally renowned institutions.

Since 2022 he holds the position of Managing Director at Aristoteles Consulting BV.

He successfully completed the following courses, among others:

VDI Wissensforum GmbH (The Association of German Engineers – training academy)

Particulate matter – characterization, reduction and separation (2017)

  • Basics of aerosol measurement technology
  • Method for measuring fine dust (PM)
  • Fine dust limit values at the workplace and in the environment
  • Legal aspects on the subject of particulate matter

University of the West of England (2019)

  • Air Quality Management
  • Air Quality Monitoring
  • Air Quality Dispersion Modelling
  • Air Quality and Development Control
  • Air Quality Action Planning

TÜV Rheinland Akademie (2023)

Certificate of competence – Mould infestation in indoor spaces, Mould Inspection & Testing

  • Mould species: living conditions, development
  • Health aspects
  • Current legal regulations and official recommendations
  • Principles of building physics
  • Appearances of microbial infestation
  • Visible infestation
  • Non-visible infestation
  • Causes of microbial infestation
  • Growth conditions
  • Structural defects
  • Water damage
  • Heating / ventilation
  • Measurement methods and sampling
  • Remediation according to relevant guidelines
  • Occupational health and safety

The training academy of the BDG -Professional Association of German Geoscientists (2023) – Die Bildungsakademie des BDG – Berufsverband Deutscher Geowissenschaftler e.V.

Indoor air sampling – theory and practice

Indoor air sampling for asbestos, VOCs, aldehydes and ketones, PCBs, PAHs and PCP.

  • General information on indoor air sampling techniques
  • General rules of indoor air sampling before, during and after sampling
  • Tasks and guideline works
  • Methodology and implementation
  • Preparation and realization of sampling
  • Documentation and follow-up

Dutch Green Building Council (January 2024)

BREEAM- NL introduction training

  • What is BREEAM-NL?
  • What BREEAM-NL guidelines/labels are there and how do you use them?
  • What is the main outline of the BREEAM-NL certification process?
  • What roles are there within the BREEAM-NL certification process?