Internal Standard Solution, 1.2ml, toluene Back Catalog number: EPA-8280IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended S-4248-10ML Daily Quality Control Standard (with 4 Fluorinated Compounds Internal Standard) 14 Analytes + 4 ISTD, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene 9 n-Heptane 17 Price on request 95018 PCB Mix 5 ppb Price on request 59524 Anion Standard Price on request