No water, no chemicals,
but 100 % comfort:
but 100% comfort:
The conversion set
for your Thetford chemical toilet
This is how it works
The upper part of the bowl of your chemical toilet is replaced by the Arwinger CassetteSeparationToiletKit seat part with separation function. The conversion can be done by yourself without specialist knowledge using the supplied instructions. The seat part ensures the separation of solids and liquids.
Both are picked up by the Arwinger CassetteSeparationToiletKit cassette, which is positioned in the service compartment and replaces the Thetford chemical cassette one-to-one. The solids fall into the cassette’s open container, which is fitted with a bag, and the liquid is fed into the cassette’s tank via the hose.
For emptying, both cassette parts can be separated. The tank for the solids has a volume of approx. 9 litres, the one for the liquid approx. 7.5 litres. The fill level of the liquid tank can be read with the help of an optical fill level indicator.
After the bowl conversion, the chemical toilet seat and lid are fixed to the new seat part and your Thetford toilet looks as good as before. You have made a separation toilet out of your chemical toilet without any damage to the fixtures or the sealing of your bathroom.
The separation toilet …
… with cassette …
… as conversion set for your chemical toilet
Thetford C220 conversion
Caravan, Camping & Motorhome Show
Impressions from GB & status
Beginning of 2023
Optimised seat part, new cassette & more
Impressions & feedback
Conversion sets & installation tips
Seat part & cassette
The first concept
Beginning of 2021
The conversion is that simple
Market launch of the Arwinger CassetteSeparationToiletKits
As the demand is so extremely high, we have decided to go to market step by step in order to be able to serve the first customers quickly.
We started with the seat part with separation function for the Thetford C250/C260 Series Plastic Bowl. Subsequently, the seat part with separating function for the Thetford C220 Series and the complete conversion sets consisting of seat part and cassette for the Thetford C220 and C250/C260 Series Plastic Bowl were launched.
The CassetteSeparationToiletKit for the Thetford C200 was made available at the beginning of 2023. To be able to convert the model, customers need to replace the bowl including seat and lid of their toilet with the bowl of the younger Thetford C220 model included in the kit. This is then converted with the corresponding seat part.
Conversion kits for Dometic 4110 as well as Thetford bench toilets will follow.
Order the Arwinger CassetteSeparationToiletKit now!
Sie erhalten die Arwinger KassettentrenntoilettenKits bei unserem Vertriebspartner Camping Wagner.
Arwinger CassetteSeparationToiletKit seat part with separation function for Thetford C200 Series
Arwinger CassetteSeparationToiletKit seat part with separation function for Thetford C220 Series
Arwinger CassetteSeparationToilet on tour
c/o Westfalia, Hall 15, Stand E03
Fair Düsseldorf, Germany
Gut Basthorst, Hamburg, Germany
Grüner Kamp, Rendsburg, Germany
New Fair Fulda, Germany
Camping Grubhof, St. Martin, Lofer, Austria
c/o Carbon Zorro
Ptak Warsaw Expo, Nadarzyn, Poland
ZAC Paris Nord, Villepinte, France
c/o Campingworld Neugebauer
Fair Wels, Austria
Burg Vogelsang, Schleiden, Germany
Fairground Bremen, Germany
Fairground Hannover, Germany
Camping pros about the Arwinger CassetteSeparationToilet
Van chemisch toilet naar compost toilet of droogtoilet, DWvlogt
Using a separation toilet in your motorhome, Motorhome Matt
ARWINGER Separating Toilet Cassette Conversion Kit CCMS 2023, The Motorhome Miles
Arwinger Umbausatz. Kassettentoiletten zur Trenntoilette 2023., GERMAN TELEVISION
Tschüss Chemieklo Arwinger. Die Kassettentrenntoilette., RICHTUNG HIMMELBLAU
Diese Trenntoilette sollte man prüfen. Arwinger Alternative?, WohnVan
abf 2023 Hannover | Update zur ARWINGER Kassettentrenntoilette., CamperTobi
TRENNTOILETTE | ARWINGER NACHRÜSTSATZ | WOHNMOBILE UND KASTENWAGEN, VanFan
ARWINGER | THETFORD Toilette einfach zur KASSETTENTRENNTOILETTE umbauen | WAHNSINN | CMT 2023, DIHUTV
CMT 23 – Umbausatz für die Chemietoilette – rückbaubar! – GENIAL!, upanddownvanlife
CMT 2023 – Zubehör-Neuheiten, reisemobil-international.de
CMT 2023: Neues Zubehör für Camper, campervans.de
Caravan Salon Austria 2022 | Die ARWINGER Kassettentrenntoilette. | Die echte Alternative., CamperTobi
Thetford Chemietoilette einfach zur Trenntoilette umrüsten | Umbau, Van Berlin
WELTNEUHEIT: Arwinger Trenntoilette, Vanlife Adventures
Camping + Wohnmobil News und Neuheiten 5/22, Womo.blog
Separator toilet conversion kit, Waterways Word, May 2023
Marine Toilet Troubles? Arwinger has the answer, Boating Business, May 2023
Arwinger – Sauber getrennt, CamperVans Nr. 2/2023
Besonderheit ARWINGER KASSETTENTRENNTOILETTE, Reisemobil International Nr. 7/2022
Customers about the Arwinger CassetteSeparationToilet
Frequently asked questions
What is the status?
The delivery difficulties caused by the pandemic and the high capacity utilisation of suppliers have made the market launch more difficult than expected. Despite this situation, we have stuck to our goal of producing and purchasing exclusively in Europe so that we can meet our high quality standards.
In order to be able to respond to the high demand as quickly as possible, we are gradually bringing the Arwinger CassetteSeparationToiletKits onto the market. The conversion sets for the Thetford series C200, C220 and C250/C260 Plastic Bowl are already available. Others are in the production planning or design stage.
For which chemical toilet models will the Arwinger CassetteSeparationToiletKit be available?
After the conversion sets for the Thetford C250/C260 Plastic Bowl, C220 and C200 Series, Arwinger CassetteSeparationToiletKits will be developed for other chemical toilet models in this order: Dometic 4110, Thetford bench toilet C500 Series and Thetford bench toilet C400 Series, Thetford C2/C3/C4 Series. Unfortunately, we are not yet able to give firm availability dates at present.
Can the containers be emptied separately?
The cassette consists of separate containers for liquid and solid, which are connected with a tension belt. Both are conveniently removed through the service flap and can be separated for emptying.
What is the volume of the tanks?
The solids tank has a volume of approx. 9 litres, the liquid tank approx. 7.5 litres.
How is the solids container emptied and kept clean?
A bag is hung in the solids container, which is completely removed for emptying. This prevents soiling of the container. We recommend using a compostable bag or a bag made of recycled material.
What kind of litter is used?
Any material that is suitable for binding moisture can be used as bedding. Small animal litter, sawdust, coconut fibres, completely dried coffee grounds or special separation toilet litter have proven to be effective.
Do the tanks have lids?
The liquid tank is completely closed; the liquid is only fed in through a small opening and emptied through a closable spout. The solids tank cannot be closed with a lid. Since only the bag is removed for emptying, i.e. the container does not have to be transported, a lid is not necessary here. In addition, the drying of the solids is supported by the fact that the container is open at the top.
How do I determine the fill level of the liquid tank?
The level of the liquid tank is read by means of an optical level indicator on the cassette.
Is ventilation planned?
Basically, a dry separation toilet hardly produces any odours. Odours are only created by the combination of solids and liquids, which does not take place here. And of course there are no chemical odours either. However, you can continue to use your existing ventilation and/or your ventilator in the service flap. If a ventilation is wanted, we recommend the SOG TT.
Will there be an agitator for the solids container?
The Arwinger CassetteSeparationToilet does not work according to the concept of mixing the solids and therefore has no agitator.
Is a conversion possible without damaging the chemical toilet?
Our original conversion concept envisaged sawing off the bracket for the closer of the original toilet. Since the wish was expressed to be able to completely dismantle the toilet, we have developed a solution here: A silicone sleeve on the lower edge of the seat section provides a flexible extension that goes over the closer bracket. It is therefore not necessary to remove it.
Does the rotatability of the toilet seat remain?
Yes, the seat can still be turned after the conversion.
Can I also use the conversion set without the cassette?
We also offer to order the seat part with separating function individually, i.e. without the cassette. If you choose not to use the cassette, you can collect the solids with a bucket and direct the liquid via the supplied hose into a canister or an underground tank.
We welcome your questions and your ideas
Take the opportunity to send us your suggestions and make the Arwinger CassetteSeparationToilet even better!