DEVELOPMENT ▪ INDUSTRIALIZATION
The new generation of WFI membrane machines: compliant, compact and modular
We start from the needs of ultrapure water consumers to develop our own WFI (Water For Injection) water production system compliant with Ph. Eur. 0169. We design the machine, subsystems and embedded software.
We create and develop the membrane filtration of tomorrow.
Since 2025, Nehemis has been developing its own ultrapure injectable water machine (Water For Injection), a technology permitted by the Ph. Eur. 0169 (2017) standard.
The technology is based on two filed patents and proprietary innovations covering thermal decontamination, on-board instrumentation, and AI-powered predictive maintenance. Nehemis develops its own sensors and actuators to optimize the water production cycle.
Our product is aimed at mid-sized CMOs and biotechs looking to diversify or scale their production of injectable water.
Subsystem design
Prototypes and
Small series
Integration and
Design to Cost
Industrialization
and Certification
Our multidisciplinary
expertise
Our development relies on a team of engineers combining mechanical, electronic and software skills to design a robust, industrializable and economically viable solution.
Mechanical Engineering
Plastic parts, mechanically welded frames, hydraulic assemblies.
Test bench development
Model-based design approach, dSpace Microlabox for the development of control laws and automatic code generation.
Embedded systems
and Microcontrollers
We develop our microcontroller boards on Altium based on STM32 and Renesas
Industrialization
and Certification
We work with a network of French and Chinese suppliers thanks to a partner located in Shanghai.
Development and
Design to Cost
Expertise in digital communication CANopen.
Laboratory
Nehemis has 200m2 to develop and test our systems.
An ambitious team, for an ambitious project
Our team of engineers combines mechanical, electronic and software skills to design our proprietary solution which is compliant, robust, industrializable and economically viable.
Pascal Roitel
CTO & Co-founder
Pascal Roitel, with 20 years of experience in water systems, holds two patents that aim to meet the requirements and challenges of membrane filtration.
Etienne Chassaing
CEO & Co-founder
Etienne Chassaing, a robotics engineer from CentraleSupélec/EPFL, leads the technical and commercial development.
Industrialization and Certification
Highly experienced in the design of technical plastic parts,
mechanically welded chassis and hydraulic systems; development
on Creo.
x2
Electronic Engineer
Specialized in microcontroller card development
custom-made, mainly STM32 with Altium software.
Software Engineer
CANopen expertise.
x3
Test Bench Engineer
Experimented on Microlabox from dSpace, Matlab simulink for
automatic code generation and data acquisition.
Control Engineer
Design of control laws by identification of systems and
MPC (model predictive control).
Industrial and Ergonomics Designer
Pascal Delahaie is involved throughout the entire process for
assist and collaborate with engineers on design
exterior of our products.
Nehemis is supported by
Néhémis is accredited by the French Innovation Credit since 2025.
2025 Accreditation
2025 Accreditation