|
»
Water samples were accurately measured on the UVF-3100 analyzer, calibrated
to vacuum pump oil, to match the source of contamination.
»
The certified spiked concentration was 63 mg/L for Gravimetric and 77
mg/L for IR. Sitelab's TPH result was 80 mg/L.
» Results below are
compared to the TPH in water concentrations reported by 31 participating
laboratories.
»
Instrumentation and test methods used by participating laboratories: US EPA
Method 418.1 by Infrared (IR) and US EPA Method 1664 by Gravimetric.
» Accuracy is
shown below. See
TPH water test
procedures for more details! |
