Johnson® Chlorine (Sanitizer) Indicator Pad PP Strip, “Non - Bleed” System, with Certificate of Conformity3 items : (1) 0~20 ppm, (2) 0~300 ppm & (3) 0~1000 ppm, 염소이온(소독제) 검출용 패드 PP스트립 (DH24CAT00003130)