The MPS-List prohibited active substances is part of the MPS-ABC and the MPS-Compact certification standard. This list aims to reduce the use of substances that are harmful to humans and the environment, thus contributing to a more sustainable ornamental horticulture sector. With this message, we would like to draw your attention to three matters regarding the MPS-List prohibited active substances.
Addition of active substances per P5 2026
Last year we informed you that four new prohibited active substances were being added to the MPS-List prohibited active substances as of 20 April 2026 (P5 2026). This means that as of this date, you will be audited against the most recent version of the list. As of period P5 2026, these substances can be identified in the MPS record-keeping environment by a black dot when a product containing these active substances is recorded. The substances are as follows:
- tributyltin oxide
- dimoxystrobin
- ipconazole
- methoxychlor
Addition of active substances per P5 2027
In addition, the following substances will be added to the MPS-List prohibited active substances as of P5 2027. These substances are being added to the list because they appear on at least two of the following lists:
- POP: The Stockholm Convention on Persistent Organic Pollutants
- PIC: The Rotterdam Convention on Prior Informed Consent
- PAN: Dirty Dozen
- EPA: Banned or Severely Restricted Pesticides
- EU: Pesticide Database Non-Approved Pesticides
- WHO: Class Ia and Ib lists
The substances are as follows:
| Active substance | Relevant list | Areas of application |
| chloropicrin | EPA (RUP) and EU | Insecticide, nematicide |
| fonofos | EPA (RUP) and EU | Insecticide |
If you are still using these substances, MPS will help you in different ways to reduce their use to zero before they are added to the list. Please therefore keep a close eye on our communications, such as our digital newsletter.
Removal of active substances
Following newly obtained insights, the substances listed below are removed from the MPS-List of prohibited active substances. As a result, these substances may be used again, unless the laws and regulations of the country in which your company is established prescribe otherwise:
- brodifacoum
- bromadiolone
- coumatetralyl
- difenacoum
- difethialone
- flocoumafen
You will find the most recent MPS-List prohibited active substances on our website.
Over 30 years ago, my journey at MPS began after I saw an advertisement in the newspaper. After the birth of my daughter, I was looking to return to work and joined the data entry department. At the time, all data was still entered manually from paper forms. Since then, I have seen the organisation grow and change, and I have grown along with it.Today, I work in the Service & Support department. No two days are the same: one day I help a customer with questions about record-keeping, the next I help them understand requirements from the auction or the UO. It is precisely this variety and the personal contact with customers that make my work interesting every day.
In 2008, I joined MPS through a recruitment agency as a secretary. I then held various positions within MPS and MPS-ECAS, including roles in the Service & Support team and as a planner. In 2018, I left the organisation for a while, but in 2023 I returned to MPS-ECAS as a back-office employee. The people are simply too much fun and the world of ornamental horticulture is so innovative that it kept drawing me back. Shortly afterwards, I started working at MPS as Coordinator Netherlands.
During the final year of my Environmental Sciences degree, I joined MPS for an internship. The internship worked out so well for both sides that I was able to stay afterwards. It felt like a natural next step, because I immediately felt at home here and was given the opportunity to continue developing myself.My work is very varied. I work on different projects and products, carry out research and analyses and contribute to practical solutions. I also manage various systems, support customers with complex technical questions and work with external parties. It is precisely this combination that makes my work interesting and ensures that no two weeks are the same.
I first joined MPS through a friend who worked in MPS’s student team. I continued working here while studying Commercial Economics, and at the end of my studies, in 2004, MPS asked if I wanted to join the organisation permanently. It seemed like a great opportunity, and more than twenty years later, I am still here.No two days are the same, and that is exactly what makes my work so enjoyable. A large part of my week consists of project meetings and translating needs from within the organisation into practical solutions. Thursday afternoon is a regular fixture, which I set aside with a colleague to make MPS 1% better every week. For example, we experiment with AI, build prototypes, improve processes or develop new ideas. The goal is always to work smarter and create more value for colleagues, customers and the organisation.