EPA Method 601 Internal Standard Back Catalog number: 19094 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59824 Conductance @ 20°C [50 µmho/cm] Price on request 59337 pH 9.0 Standard @ 25°C Price on request 94354 2,4,5-Trichloroanisole Price on request