Interference Standard Mix 2 Back Catalog number: 52040 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674545 Pyraflufen-ethyl, 100mg Price on request 52331 EPA Method 6020/6020A - Mix B Price on request 83583 2,3,5,6-Tetrachloroterephthalic acid Price on request