I-RA Sediment Filter is specially designed for I-RA Baby Salon Sprayer, I-RA Micro Cleaner Restroom Faucet Sprayer, I-RA Micro Cleaner Kitchen Faucet Sprayer and I-RA Micro Cleaner Pull-out Kitchen Sprayer. It is non-woven fabric filter to remove harmful particles like rust and floaters. When its color turns dark brown, it needs to be replaced.