FFF의 문제점을 보완한 셀룰로오스 필터가 들어 간 Kit-CEL이 개발되었고, 유용성과 신뢰도 평가에서 적합하다고 보고된 바 있다.
A Kit-CEL containing a cellulose filter was developed to make up for the problems of FFF, also it has been reported that it is appropriate evaluation of usefulness and dependability.