Guide
What size separating toilet do I need?
The most important size is the urine tank: it decides how long you can go without emptying. A simple rule of thumb helps you find the right size.
By the Trenntoiletten-Check editorial team (Palo®) · updated 12 Nov 2026
The rule of thumb
For planning, many people assume around 1 litre of urine per person per day when the toilet is used all day. This is only a rough guide. The real amount depends heavily on how much you drink and how often you use other toilets while out and about.
| People × days | Approx. need | Suitable tank size |
|---|---|---|
| 1 person × 2 days | 2 l | from approx. 3 l |
| 2 people × 2 days | 4 l | from approx. 5 l |
| 2 people × 3 days | 6 l | from approx. 7–8 l |
| 3 people × 3 days | 9 l | from approx. 10 l |
Keep the weight in mind: a full 10-litre tank weighs about 10 kg. If you have to carry it a long way to empty it, a size smaller and more frequent emptying is often the better choice.
What about the solids container?
The solids container fills up much more slowly than the urine tank, so for most models it is not the limiting factor. More important is that the bag sits well and is easy to remove.
Models with a large urine tank (9.5 l and up)
| Model | Height | Urine tank | Price (RRP) |
|---|---|---|---|
| Palo® Maxi Pro Our product | 46.2 cm | 11.1 l | €479 |
| Trelino Evo L | 43 cm | 10 l | €519 |
| Trelino Origin L | 46 cm | 10 l | €699 |
| Trobolo LunaBlœm | 51.6 cm | 10 l | €599 |
| Boklo Emmy new (L) | 45 cm | 10 l | €599 |
| BioTioo 1.0 RL / 2.0 | 38.8 cm | 10 l | approx. €1,159 |
| Helipott Easy | 44.6 cm | 10 l | €1,365 |
| Kildwick MiniLoo / PiccoLoo | 44.5 cm | 9.5 l | n/a |
Manufacturer data as of 3 Nov 2026. Palo® models are labelled; this site is run by Palo®.