Suitable for all Screeny Weeny models, the Screen Urine Set in LGBTQ+Weeny! This refill pack contains fully synthetic urine, packaged in a practical, sturdy 80 ml refill bag that can also be closed again. Very easy to replace so that nothing stands in the way of continuing to pee. 80 ml refill fits both ScreenyWeeny, LGBTQ+ and ScreenUrin sets. Very easy to replace and reseal. Good to know: Three different labels (red, yellow, green) indicate different values in urine, such as pH and creatinine values, as these depend on the diet and vary from day to day. All bags contain synthetic urine, which corresponds in all relevant parameters to the urine of a healthy, fasting person. All three colors have the same high quality standard. Important note: ALL three marked types are completely acceptable for use.