Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71946 Halofenozide Price on request MA9112 pH 12.45 buffer solution (230mL) Price on request L429-CS4 Calibration Solutions CS4 for PAHs, in IO/TO, 1ml Price on request