Original Consumables & Spare Parts from Milli-Q®

Dear Valued Merck Lab Water Solutions Customers:


This letter aims to give you an overview of the Consumables and Spare Parts management process related to Merck’s Lab Water Purification Systems. Because our purification cartridges play a critical role in the quality of the purified water, in the performance and longevity of your water purification system, all cartridges are manufactured exclusively at our production site in Molsheim (France) in an ISO 9001:2015 facility.


These cartridges, designed for your systems and applications, are easily recognizable as they are manufactured under the unique Merck brand and design and display our logo.


For 50 years, we have been able to deliver and guarantee optimal product performance as a result of a rigorous selection of material and purification media, as well as our best-in-class quality process environment. Generally, there are risks associated to the use of non-Merck consumables and spare parts that could lead to a number of dysfunctions on the water purification systems, including degradation of its performance, as well as generating risks of failure.

  • As far as pretreatment packs are concerned, tap water may not be treated in the appropriate manner, which may reduce the lifetime of the reverse osmosis membrane and of the electro-deionization module.
  • As far as purification packs to produce ultrapure water are concerned, the produced water may be of a lower quality and/or their lifetime may be shorter than originally expected.

To avoid such risks, we have never considered sub-contracting the manufacturing of our purification cartridges to external companies, nor create “equivalent” or “comparable” versions.


Furthermore, when a system is validated to comply with a regulated environment, our qualification procedures (IQ, OQ, MP, and PQ) will no longer be applicable with cartridges or spare parts not manufactured by us.


Also, we confirm that no third-party company has ever manufactured purification cartridges on behalf of Merck.


For any additional information or questions, please do not hesitate to contact your local Lab Water Solutions sales specialist.


Gulf Scientific Corporation (GSC) is a leading provider of complete laboratory solutions in the fields of analytical, life and material sciences. Founded in 1990, GSC is headquartered in Dubai, United Arab Emirates, with regional offices and supply chain distribution centers across the Middle East.