Disc. Use P#52130 (100mL) Back Catalog number: 53111 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-23SS Surrogate Standard Solution, 1.2ml, nonane Price on request 10652.22-K-AN Oxytetracycline, 96%,1000 µg/mL,acetonitrile,1mL, Price on request 19494 EPA Method 524 & 624 - Internal Standard Price on request