Hach DR2400 - Page 779

TPH (Total Petroleum Hydrocarbons)
TPH (Total Petroleum Hydrocarbons)
TPHSoil_None_Other_IMM_Eng_Ody.fm Page 9 of 12
Sample #2: 0.400 Abs
Sample #3: 0.550 Abs
Interpretation
Interpretation for a soil sample:
Sample #1 — Sample reading is less than the readings for both calibrators.
Therefore the sample concentration of TPH is greater than both 20 ppm and
50 ppm diesel fuel.
Sample #2 — Sample reading is between the readings for the TPH calibrators.
Therefore the sample concentration of TPH is between 20 ppm and 50 ppm
diesel fuel.
Sample #3 — Sample reading is greater than the readings for both calibrators.
Therefore the sample concentration of TPH is less than both 20 ppm and 50 ppm
diesel fuel.
Interpretation for a water sample:
Sample #1 — Sample reading is less than the readings for both calibrators.
Therefore the sample concentration of TPH is greater than both 2 ppm and
5 ppm diesel fuel.
Sample #2 — Sample reading is between the readings for the TPH calibrators.
Therefore the sample concentration of TPH is between 2 ppm and 5 ppm
diesel fuel.
Sample #3 — Sample reading is greater than the readings for both calibrators.
Therefore the sample concentration of TPH is less than both 2 ppm and 5 ppm
diesel fuel.
Storing and Handling Reagents
• Wear protective gloves and eyewear.
• When storing reagent sets for extended periods of time, keep them out of
direct sunlight. Store at a temperature of 4 °C (40° F) when not in use.
• Keep the foil pouch containing the TPH Antibody Cuvettes sealed when not
in use.
• If Stop Solution comes in contact with eyes, wash thoroughly for 15 minutes
with cold water and seek immediate medical help.
Sensitivity
The antibodies used in the TPH Test Kit react with a variety of compounds
found in petroleum fuels; however, each TPH calibrator has been formulated to
represent a specific concentration of diesel fuel. To use the calibrators for other
TPH compounds, see Table 1 or Table 2 to select the proper TPH calibrator for the
compound, sample, and range you want to test.
Example:
To use the TPH calibrators for gasoline, find “Gasoline” in the first column of
Table 1 or Ta ble 2. Read across the column to find the ppm represented by each
calibrator. For gasoline, calibrator #1 = 15 ppm, calibrator #2 = 35 ppm, and
so forth.