MET-Biodiesel Capillary GC ColumnThe MET-Biodiesel was designed specifically for the determination of free and total glycerin in B100 biodiesel samples.
Features and benefits of this column include:
- Good peak shape and resolution for all glyceride impurities of interest
- Ability to separate glycerin in addition to mono-, di-, and triglycerides (as methyl esters) from the FAMEs
- A maximum temperature of 380 °C (isothermal) and 430 °C (programmed), exceeding the temperature limitations specified in biodiesel methods ASTM D6584 and EN 14105:2003
- Metal was selected as the column material because it holds up better than fused silica under the method conditions, virtually eliminating column breakage
- Integrated guard protects the analytical column from excess reagent and non-volatile compounds, extending column life with a leak-free connection
Chromatograms
The following chromatograms were generated using the MET-Biodiesel: (click to view)
| Ordering Information for GC Columns |
| Description |
Cat. No. |
| MET-Biodiesel, 14 m x 0.53 mm I.D., 0.16 µm with integrated 2 m x 0.53 mm I.D. guard |
28668-U |
Chromatograms
| Blank Containing Internal Standards Only on the MET-Biodiesel |
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 |
| Peak IDs |
| 1. |
Butanetriol (I.S.) |
| 2. |
Tricaprin (I.S.) |
| |
| Conditions |
| Column: |
MET-Biodiesel, 14 m x 0.53 mm I.D., 0.16 µm with integrated 2 m x 0.53 mm I.D. guard (28668-U) |
| Oven: |
50 °C (1 min.), 15 °C/min. to 180 °C, 7 °C/min. to 230 °C, 30 °C/min. to 380 °C (10 min.) |
| Det.: |
FID, 380 °C |
| Carrier Gas: |
helium, 3.0 mL/min. |
| Injection: |
1 µL, cold on-column |
| Sample: |
Method blank consisting of Butanetriol Internal Standard (44896-U) and Tricaprin Internal Standard (44897-U), derivatized with MSTFA (394866) then diluted in heptane |
| ASTM D6584 Calibration Standard on the MET-Biodiesel, Run 1 on a New Column |
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 |
| Peak IDs |
| 1. |
Glycerin |
| 2. |
Butanetriol (I.S.) |
| 3. |
Monoolein |
| 4. |
Tricaprin (I.S.) |
| 5. |
Diolein |
| 6. |
Triolein |
| |
| Conditions |
| Column: |
MET-Biodiesel, 14 m x 0.53 mm I.D., 0.16 µm with integrated 2 m x 0.53 mm I.D. guard (28668-U) |
| Oven: |
50 °C (1 min.), 15 °C/min. to 180 °C, 7 °C/min. to 230 °C, 30 °C/min. to 380 °C (10 min.) |
| Det.: |
FID, 380 °C |
| Carrier Gas: |
helium, 3.0 mL/min. |
| Injection: |
1 µL, cold on-column |
| Sample: |
ASTM D6584 Standard Solution 1 (44899-U) plus Butanetriol Internal Standard (44896-U) and Tricaprin Internal Standard (44897-U), derivatized with MSTFA (394866) then diluted in heptane |
| ASTM D6584 Calibration Standard on the MET-Biodiesel, Run 100 on the Same Column |
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 |
| Peak IDs |
| 1. |
Glycerin |
| 2. |
Butanetriol (I.S.) |
| 3. |
Monoolein |
| 4. |
Tricaprin (I.S.) |
| 5. |
Diolein |
| 6. |
Triolein |
| |
| Conditions |
| Column: |
MET-Biodiesel, 14 m x 0.53 mm I.D., 0.16 µm with integrated 2 m x 0.53 mm I.D. guard (28668-U) |
| Oven: |
50 °C (1 min.), 15 °C/min. to 180 °C, 7 °C/min. to 230 °C, 30 °C/min. to 380 °C (10 min.) |
| Det.: |
FID, 380 °C |
| Carrier Gas: |
helium, 3.0 mL/min. |
| Injection: |
1 µL, cold on-column |
| Sample: |
ASTM D6584 Standard Solution 1 (44899-U) plus Butanetriol Internal Standard (44896-U) and Tricaprin Internal Standard (44897-U), derivatized with MSTFA (394866) then diluted in heptane |
| EN 14105 Monoglyceride Standard on the MET-Biodiesel |
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 |
| Peak IDs |
| 1. |
Butanetriol (I.S.) |
| 2. |
Monopalmitin (C16:0) |
| 3. |
Monoolein (C18:1) |
| 4. |
Monostearin (C18:0) |
| 5. |
Tricaprin (I.S.) |
| |
| Conditions |
| Column: |
MET-Biodiesel, 14 m x 0.53 mm I.D., 0.16 µm with integrated 2 m x 0.53 mm I.D. guard (28668-U) |
| Oven: |
50 °C (1 min.), 15 °C/min. to 180 °C, 7 °C/min. to 230 °C, 30 °C/min. to 380 °C (10 min.) |
| Det.: |
FID, 380 °C |
| Carrier Gas: |
helium, 3.0 mL/min. |
| Injection: |
1 µL, cold on-column |
| Sample: |
EN 14105:2003 Monoglyceride Stock Solution (49446-U) plus Butanetriol Internal Standard (44896-U) and Tricaprin Internal Standard (44897-U), derivatized with MSTFA (394866) then diluted in heptane |
 |
| Peak IDs |
| 1. |
Glycerin |
| 2. |
Butanetriol (I.S.) |
| 3. |
Monopalmitin (C16:0) |
| 4. |
Monoolein (C18:1), Monolinolein (C18:2), Monolinolenin (C18:3) |
| 5. |
Monostearin (C18:0) |
| 6. |
Tricaprin (I.S.) |
| |
| Conditions |
| Column: |
MET-Biodiesel, 14 m x 0.53 mm I.D., 0.16 µm with integrated 2 m x 0.53 mm I.D. guard (28668-U) |
| Oven: |
50 °C (1 min.), 15 °C/min. to 180 °C, 7 °C/min. to 230 °C, 30 °C/min. to 380 °C (10 min.) |
| Det.: |
FID, 380 °C |
| Carrier Gas: |
helium, 3.0 mL/min. |
| Injection: |
1 µL, cold on-column |
| Sample: |
B100 Biodiesel plus Butanetriol Internal Standard (44896-U) and Tricaprin Internal Standard (44897-U), derivatized with MSTFA (394866) then diluted in heptane |
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