Effective Filtration: Developed for families who use inferior drinking water, for travel and outdoor activities, the BB9-2 black water filter uses natural coconut shell activated carbon and a BPA-free housing. The filter reduces contaminants such as chlorine, sand, rust, odor, sediment and large particles and improves the taste of water. It provides you with clean and safe water. Excellent Choice: The BB9-2 black water filter Black water filter BB9-2 perfectly matches the original brand without causing water leakage. Long-lasting service life: The BB9-2 black water filter can provide 6,000 gallons (22712 liters) of fresh water. For best performance, we recommend replacing the filter every 6,000 gallons (22712 liters). However, this may vary depending on your water conditions. Compatible models: The filter matches the original brand of the black purification element BB9-2. It is interchangeable with Travel, Big, Royal, Imperial, Crown Series, Propur Traveler, Nomad, King, Big Series,