Interference Standards Set Back Catalog number: 52038 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680889 D3-Glufosinate hydrochloride, 10mg Price on request NG-15100-1G Benzoic acid sodium salt, 1g Price on request 674800 D4-Sulfamethoxazole, 10mg Price on request