About our company

The people and history of ChloroSpec


Prof. Alfred Holzwarth is well-known in the photosynthesis community for his advanced research in the biophysics of photosynthesis area. In particular for his contribution to the technology development and application of chlorophyll fluorescence measurement techniques of photosynthetic organisms, as well as advanced data analysis methods. He has published or co-published a significant number of scientific studies in this field.

A few years ago, he became a visiting professor in the laboratory of Prof. Roberta Croce, head of the Biophysics department at the VU University in Amsterdam, focusing their collaboration on chlorophyll fluorescence techniques and applications. They decided to join the Demonstrator Lab at the VU in Amsterdam, with the aim to focus their expertise into the development of a novel easy-to-use instrument that makes full use of both the spectral and temporal dimension of chlorophyll fluorescence. Soon after they successfully realized a laboratory proof-of-concept version, it became clear that more information could be gathered and extracted from chlorophyll fluorescence signals than ever before. Not only does the instrument allow to separate and characterize various fluorescence components, quenching mechanisms, etc. It also allows to identify and characterize different stress factors and detect stress effects at an earlier stage.

As powerful data analysis techniques including machine learning are important features of our technology, we also cooperate with expert groups in that area.

The original laboratory set-up of the proof-of-concept version has now been turned into a commercially available product.


ChloroSpec has been established as a private enterprise and is registered as a B.V. at the Dutch Chamber of Commerce (KvK) with registration number 81861346.

ChloroSpec is domiciled at the Amsterdam Venture Studios in the VU premises, with corporate address De Boelelaan 1105, 1081 HV Amsterdam.

The management of ChloroSpec consists of Peter Kievit as CEO and Alfred Holzwarth as CTO. Production is outsourced; the prototype and initial laboratory product version (L1) are being manufactured by the technical departments from the VU that have also been engaged in the initial development and laboratory set-up.

Further development will be conducted in close cooperation with the VU faculty departments already involved and a few selected leading laboratories as launching customers.

Media and content are produced in partnership with Jester&Wylde.


Peter Kievit
Peter KievitCEO
Peter Kievit started his career in the international financial markets and has spent almost 20 years in various commercial investment banking and management roles with ABN AMRO and ING. In 2005, he established his own investment management and advisory company. He has started a few new ventures with different business partners in different sectors, being responsible for finance and general management. In addition he has held various financial advisory and interim management positions, mainly in SME companies. Peter Kievit has obtained a masters degree in Econometrics, in Business Economics and an executive masters degree in Finance and Control (RC) from the University of Amsterdam.
prof. Alfred Holzwarth
prof. Alfred HolzwarthCTO
Prof. Alfred Holzwarth has a long-standing academic track record in the field of optical spectroscopy and the study of ultrafast processes in chemical energy conversion. He has spent over 35 years as a senior research group leader and was appointed as C3-professor at the Max Planck Institute. He has also been a member of the Biophysics Science faculty at the Heinrich Heine University in Düsseldorf for over 20 years. Since 2016 he is a visiting professor at the Biophysics department at the VU University in Amsterdam. Prof. Alfred Holzwarth has obtained a diploma degree in Chemistry and a doctor of natural sciences degree in Physical Chemistry from the Swiss Federal Institute of Technology in Zürich.