In which scenarios the Xiaomi Faucet Water Purifier cannot be used?

It is not recommended to use the Xiaomi Faucet Water Purifier in these scenarios:
1. The Xiaomi Faucet Water Purifier cannot replace a water purifier. Despite its 5-stage filtration system, the Xiaomi Faucet Water Purifier has a much lower filtration precision compared to the RO (Reverse Osmosis) membrane (0.0001 microns), making it unable to filter out scale and organic materials. You cannot drink the output water of the Xiaomi Faucet Water Purifier directly. So it cannot replace a water purifier;
2. The Xiaomi Faucet Water Purifier cannot be connected to a water dispenser. Water dispensers, also known as pipeline water dispensers or wall-mounted dispensers, require pure or purified water. The Xiaomi Faucet Water Purifier is designed for use on faucets and does not provide water that meets the purity requirements for these dispensers. You cannot drink the output water of the Xiaomi Faucet Water Purifier directly. So it cannot be connected to a water dispenser;
3. The Xiaomi Faucet Water Purifier cannot be installed at the end of a water purifier. The design and fittings of the Xiaomi Faucet Water Purifier are intended to connect directly to standard faucets. Connecting it downstream of another purification system requires additional adapters, which will also cause leaks, strip away beneficial minerals, and increase unnecessary costs.