Antibody Analysis
Columns: |
A: TSKgel CM-STAT, 7 µm, 4.6 mm ID × 10 cm
B: ProPac WCX-10, 10 µm, 4 mm ID × 25 cm
|
Mobile phase: |
A: 20 mmol/L MES, pH 6.0
B: 20 mmol/L MES + 0.5 mol/L NaCl, pH 6.0 |
Gradient: |
A: 0 min (10% B) 15 min (30% B) 15 min (100% B) 17 min (0% B) 17 min (10% B)
21 min (10% B)
B: 0 min (10% B) 30 min (30% B) 30 min (100% B) 32 min (100% B) 32 min (10% B) 36 min (10% B) |
Flow rate: |
A: 1.0 mL/min B: 2.0 mL/min |
Detection: |
UV @ 280 nm |
Temperature: |
25 °C |
Injection vol.: |
20 µL |
Samples: |
monoclonal antibodies (mAb A through E) |
|
|
|
Separation of Charge Isomers
|
Columns: |
TSKgel CM-STAT, 7 µm,
4.6 mm ID × 10 cm
|
Mobile phase: |
A: 50 mmol/L sodium acetate buffer, pH 5.0
B: 30 mmol/L sodium acetate buffer (pH not adjusted)
Column equilibrated with mobile phase A, the sample is injected, then eluted stepwise to 100% mobile phase B
|
Flow rate: |
1.0 mL/min
|
Detection: |
UV @ 280 nm |
Temperature: |
25 °C |
Injection vol.:1 |
0 µL |
Sample: |
purified mAb |
Sample concentration: |
1 g/L |
|
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