Retention Time Verification Standard Back Catalog number: 51172 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4899-50-T PBDE-Mix 25, 50µg/ml in TO, 1ml Price on request 54305 Phosphate (PO43-) as P Price on request 79300 Heptachlor Price on request