QC Standard 4 Back Catalog number: 52087 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680467 2-Ethyltoluene, 200 µg/ml, Methanol, 1ml Price on request 672808 Acetamiprid, 100mg Price on request 71588 1-Ethyl-2-pyrrolidinone, 1000µg/ml in MeOH, 1ml Price on request