Raft washers

With Limex raft washers, spotless floating rafts , also known as floats or floaters, are guaranteed. Floating rafts are primarily used in hydroculture and hydroponics. The cleaning effect of our raft washers meets strict hygiene regulations, so every cultivation cycle begins with clean starting material. Easily remove plant residues, substrate, root remnants and algae. Our raft washers help you to increase the quality of your crops and take your cultivation to the next level.

Wash floating rafts thoroughly, sustainably and easily 

Every washing problem is unique. We can adjust our raft washers very precisely to suit your cleaning needs. Consider for instance the ideal spray pressure, to prevent  damage to polystyrene floating rafts. We also avoid wasting more water, disinfectant and energy than necessary, and bacteria, mould and plant residues don’t stand a chance. Good hygiene of floating rafts in hydroponic production systems is essential for the health and quality of your products. Cleaning with a Limex raft washer contributes to a reduced risk of contamination and spoilage and therefore to a higher output.

Pythium in algae in t hydroponic production systems 

The fungus Pythium can, among other things, be found in algae. Critical levels of Pythium in a hydroponic system affect the oxygen content of the water, which is detrimental to the crop. Thorough cleaning of rafts and floats, and disinfection with hydrogen peroxide if necessary, substantially reduces the risk of Pythium.  

Use of chemicals in floating raft washers

When chemicals are used in the process of cleaning floating rafts, there is a risk that chemical residues will remain on the raft. Alkaline cleaner (soap) can do a lot to clean the floating rafts, but these chemical residues are potentially harmful to the cultivation water. For this reason, only the disinfectant hydrogen peroxide is used. To do this, Limex washers are specially configured to dose hydrogen peroxide automatically. In this way, our washing machines safeguard the quality and health of your crops.

Why a Limex raft washer?

  • Floating rafts guaranteed free of plant residues, substrate and algae;
  • Lower emissions and higher savings thanks to accurate use of water, energy and disinfectant;
  • Specific spraying pattern and water pressure to avoid damaging polystyrene;
  • Healthier products through reduced use of pesticides;
  • Reuse of water thanks to a closed system – water is filtered and circulated in the washer;
  • Flexible configuration of our washing lines through modular design;
  • Guaranteed visually and microbiologically clean floating rafts;
  • Robustly built, easy to maintain and easy to clean;
  • A washing machine integrated in your production line or stand alone.

Additional possibilities with our float washers

  • Washing water heated by electric heating, heat exchanger or steam injection;
  • Blowing off water droplets;
  • Renting a machine – ideal for seasonal products;
  • Additional filter technologies;
  • Various disinfection methods;
  • Various types of floating rafts are possible, various dimensions and materials. Fr example polystyrene or hard plastic.

Sinner’s Circle for raft washers

The ‘Sinner’s Circle’ cleaning principle applies four variables in different quantities: mechanical power, contact time, temperature and chemistry. These factors are precisely attuned to the specific soiling. Washing processes are configured in a washing installation, with each process having a different combination of the factors in Sinner’s Circle. When all the variables are in balance, this provides the most thorough cleaning results. Limex has unparalleled knowledge of all four variables of Sinner’s Circle. We’ll be happy to advise you on the best way to apply this principle to your washing demands. 

Limex hydroponic projects

Our machines are active in hydroponics worldwide and are used successfully at companies such as:

  • Hydronov Inc., Mirabel, Canada;
  • Dominiek de Craemer in Pittem, Belgium, with three raft washers in operation;
  • Plantlab installed two raft washers;
  • BrightFarms will install their sixth and seventh raft washers in early 2022;
  • Deayoung in South Korea;
  • De Kruidenaer in Etten Leur, the Netherlands;
  • Tanimura & Antle in the USA installed their second washer in 2021;
  • Third Coast Produce LLC USA;

Why a Limex raft washer?

Limex has close to 40 years of experience in cleaning reusable containers and packaging for the vegetable and plant sectors. We have always continued to grow with the market, technology and innovative solutions. Limex is aware of all the latest developments and understands the challenges you face. Our solutions are therefore always engineered to suit your specific situation. 

Limex is constantly developing

Through our years of process knowledge and with laboratory research, we can demonstrate the best method to remove viruses such as ToBRFV, CGMMV, TVX and the fungus Fusarium from harvest crates and trays (Limex research 2017, 2020, 2021). 

Are you interested in what our raft washers can do?

Would you like to learn more about what our raft washers or other washing machines can do for you? Would you like to find out more about these studies? Feel free to contact us without obligation. We’ll be happy to help!

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This is what satisfied customers say about us

Limex tray and raft washing machine lowers water use and improves cultivation hygiene at De Kruidenaer

Christ Monden: “After I gave Joep Janssen a tour in the greenhouse and shared my wishes, he immediately had an idea of our wishes and the practical applications. That ultimately led to the installation of the washer, which enabled us to save a lot of water”

Improved cultivation hygiene for ImHofBio thanks to the Limex tray washing system

After examining many different machines, we finally settled on purchasing our new machine from Limex. We received competent and thorough advice before buying. Limex also adapted the new machine to our needs. In addition, our first few experiences have shown that the after-sales service and advice from Limex is also fantastic. – Hansjürg Imhof

Fully automatic washing line for Royal De Ree Holland

“What we now have is a system that washes the transport crates far better than the previous installation, and the number of operators has been reduced from three to just one.”- Joost van den Berg

Limex crate and tray washer at Jungpflanzen Gernert

“The trays are thoroughly cleaned and disinfected with foam from Menno Florades. The washing result could be seen very quickly from the better root quality.” – Achim Gernert

Intensive and sustainable crate washer for Wijnen Square Crops

“With this washer, we can be sure that the crates that come out of the machine are clean and free from viruses and other diseases; we can use them in our processes without risk.” – Koen Saris

Meet our sustainable partner: PlantLab

“We are excited about the washing result of the Limex machine. We like to share our plans and working method with a company like Limex that is also committed to sustainability and we are looking forward to a beautiful and successful collaboration in the future!” – Mr. Hans van Scheijndel

Limex develops process for hygienic cleaning of propagation trays

“Limex is developing constantly to meet our increasingly stringent requirements. We can recommend Limex with a clear conscience.” – Oliver Schneider

5 Tray washers in 4 years at Svenska Skogsplantor

“Our collaboration with Limex has worked very well. A supplier that we will continue to work with and can recommend as a good partner.“ – Niclas Noord

Limex crate washers at Wesselman Flowers

“During cultivation, we see cycle after cycle of tulips emerging uniformly. An extra benefit is that the machine can remove the TVX virus. I can certainly recommend a Limex washer to every tulip grower.” – Joost Wesselman

Hishtil and Limex announce intensive collaboration

“The fruits of this productive collaboration between Limex and Hishtil permit both companies to offer their customers the best sanitation solution and healthy propagating material that will allow them to maximize crop quality and yields.” – Amit Dagan

Silver – our tray washer partner in Chile

“It is a pleasure for us to work with Limex, which is aware of the problems of hygiene and water scarcity that concern us in Chile and some regions.” – Martin Campos

Limex crate washer at Boer Erik

“I have seen Limex machines at other fruit growers, even one that has been in use for 25 years and is still running. When I invest, I think it is important to invest in high-quality and well-functioning products that I will be able to use for years to come.” – Boer Erik

Industrial tray and trolley washing machines for Ontario Plants Propagation, Canada

“I’m really proud that we get such large, intensive trolley and tray washers.” – Pieter van Dijk

Limex Bucket Washer at Veiling Holambra Brazil

“The delivery of the bucket washer from Limex has fully met all our expectations! Limex has now a satisfied customer in Brazil!” – André van Kruijssen

Limex trolley washer helps improve hygiene at WPK Vegetable Plants

“This investment improves our capacity to keep any potential threats at bay,” says Erik van der Arend, general manager at WPK Vegetable Plants.

LCS/Royal FloraHolland Bucket Washers

“The Limex washers are an indispensable component for a successful service to LCS!” – Jan van Hoef

Sustainable box cleaner Scherpenhuizen

For distribution centre Scherpenhuizen, Limex supplied a boxwasher, type KKW6000NS for sustainable washing of boxes where the water is heated by high-quality residual heat from cooling.

Limex tray washer at Bergvik Skog Plantor

“To have a tray washer that works this great has really boosted our production at the nursery. The growing trays gets clean and we can use them over and over again in our production without any problems. I can highly recommend any forest plant producer to use a Limex Washer in their production line.” – Ronny Anngren

Limex crate washer at Banken Champignons

“The Limex crate washer meets our hygiene requirements (microbiological cleanliness) and produces a drying result of less than four grams per crate. This allows an output of 5,600 clean crates per hour, and that maintains our delivery capacity at an optimal level. ” – Jurgen Banken