1,2,3,4-Tetramethylbenzene Back Catalog number: 70491 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L429-IS Method 429 Internal Standard Solution, 100µg/ml in Isooctane/25% toluene, 1,2ml Price on request 92908 2-Methylpentane & 1,2,4-Trimethylbenzene Price on request 3521.7-100-AN Triclopyr Price on request