Precision since 1954

Our history

Tradition and motivation: How we have been moving the world for over six decades

In the 1950s, the world was particularly on the move. This also applied to Kenneth Slee, who founded the company during this time with his vision of unique high-precision devices. In 1954, he developed together with the pathologist Prof. Pearse the world’s first cryostat microtome – a milestone for Slee and the entire histopathology.

With the relocation to Mainz in 1963, Slee’s unique story of success started off in Germany. Slee has been a manufacturer of precision technology in the field of histopathology for almost 70 years, and for six decades, the Slee brand has stood for high-quality medical products “Made in Germany”.

Slee in numbers

The Slee history at a glance


Kenneth Slee founds his company in London with an idea and a vision


Kenneth Slee and Prof. Anthony Pearse develop the first freezing microtome


Slee Mainz is founded and takes over the business field “Medical Technology”


Complete relocation of Slee to Mainz, Germany


Beginning to build up the worldwide distribution network (on all continents)


The next step follows – on January 1st, SLEE medical GmbH is founded


The excellent quality is now also confirmed with ISO 13485 approval


The product range of devices is supplemented by consumables


Launch into the next dimension of precision technology – with the new Slee company headquarters in Nieder-Olm

Slee 2021

Milestone for the future

We know our responsibility. Day by day we strive to be the change in the world and to improve the Slee brand, the company and our products. We have laid the foundation for the next decades with our new company headquarters in Nieder-Olm, a naturally CO2 neutral building with state-of-the-art facilities.

From here, we want to continue to move and improve the world of histopathology with all our employees.