TOC STANDARDS-KIT 1-CONTAINS 0,1,5, & 10 PPM KHP (AS C) IN 0.05% TOC STANDARDS-KIT 1L-CONTAINS 0,1,5, & 10 PPM KHP (AS C) IN 0.05% TOC STANDARDS-KIT 2L -CONTAINS 0,1,10,25,100 PPM KHP (AS C) IN 0.05% TOC STANDARDS-KIT 3L-CONTAINS 0,25,50,100 PPM KHP (AS C) IN 0.05%