Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 14062.18-100-ME (+/-)-3-(4-Methylbenzylidene-d4)camphor, 100µg/ml Price on request 677924 Pyrifenox, 100 µg/ml, Ethyl acetate, 1ml Price on request 32611 2,3-Dichloro-1-propene Price on request