EPA Method 525 Spike B Back Catalog number: 92313 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended (3837.3) Glycerol: See product 3644.3 Price on request C17723500 1,3,5-Trichlorobenzene, certified, 0.25g Price on request 675980 D5-Atrazine, 100 µg/ml, Acetone, 1ml Price on request