Solids (EPA Methods 160.1,.2,.3) Back Catalog number: 54167 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16170000 Phthalic acid, bis-benzyl ester, certified, 0.1g Price on request C15712000 4-n-Octylphenol, certified, 0.25g Price on request 2700.8-100MG Isocaffeine (1,3,9-Trimethylxanthine),neat,neat,100mg, Price on request