ICP-MS Tuning Solution #1 EPA 200.8 Back Catalog number: 52122 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678219 1-(4-Isopropylphenyl)urea, 100mg Price on request 50138 AA Mix #1 Price on request DF-IS-J20 Mass-Labelled PCDD Internal Standard Solution, 1.2ml, nonane Price on request