Calibration of HPLC
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Calibration of Pumps:-
1.1 Flow Accuracy and Flow precision
Observation table for Accuracy of Flow rate
| Sr. No. | Set flow rate in
mL/ min |
Time require to collect 10mL volume | Observed flow rate in
mL/ min |
Acceptance criteria
|
|||
| 1 | 2 | 3 | Average | ||||
| 1 | 0.5 | 0.49-0.51 | |||||
| 2 | 1.0 | 0.98-1.02 | |||||
| 3 | 1.5 | 1.47-1.53 | |||||
| 4 | 2.0 | 1.96-2.04 | |||||
| 5 | 5.0 | 4.90-5.10 | |||||
Observation Table for Precision of flow rate
| Sr. No. | Set flow rate in
mL/ min |
Observed flow rate in mL/min | %RSD | Acceptance criteria
|
|||
| 1 | 2 | 3 | Average | ||||
| 1 | 0.5 | ≤ 2.0% | |||||
| 2 | 1.0 | ≤ 2.0% | |||||
| 3 | 1.5 | ≤ 2.0% | |||||
| 4 | 2.0 | ≤ 2.0% | |||||
| 5 | 5.0 | ≤ 2.0% | |||||
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1.2 Gradient Accuracy:-
Observation table for Channel A and B
| Eluent Composition | Hx | Calculated Bx (%) | Acceptance Criteria |
| 20% | 19.4-20.6 | ||
| 40% | 38.8-41.2 | ||
| 60% | 58.2-61.8 | ||
| 80% | 77.6-82.4 | ||
| 100% | 97.0-103.0 |
Height at 100% composition of B (H100) = __________
Observation table for Channel C and D
| Eluent Composition | Hx | Calculated Dx (%) | Acceptance Criteria |
| 20% | 19.4-20.6 | ||
| 40% | 38.8-41.2 | ||
| 60% | 58.2-61.8 | ||
| 80% | 77.6-82.4 | ||
| 100% | 97.0-103.0 |
Height at 100% composition of D (H100) = __________
Calculation:
The actually obtained mobile phase composition can be calculated from the Hx values by the following formula.
BX or DX (%) = HX (mm)/H100 (mm)————— x (100)
= _____________________
Where:
X = for the programmed step height (20, 40, 60 and 80).
HX = Height of the respective plateaus in mm of B or D
DX = the actual obtained mobile phase composition.
H100 = Height at 100% composition of B or D.
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Calibration of Auto Injector:-
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Vial Test
| Sr No | Vial Position/ Location | Observation |
| 1 | Septum pierced/Not pierced | |
| 2 | Septum pierced/Not pierced | |
| 3 | Septum pierced/Not pierced | |
| 4 | Septum pierced/Not pierced | |
| 5 | Septum pierced/Not pierced |
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Volume accuracy of injection:-
Instrument/Equipments/Standards used:
| Balance No | |
| Balance calibration due date | |
| Injection Volume | 20µl |
| Number of Injections | 10 |
| Density of Water at 200C (d) |
Observation Table:
| Initial weight of Vial + Water(W1) in gram |
|
| Weight of Vial + Water after 10 Injection(W2) in gram |
|
| W = (W1-W2) (in gram) |
|
| mL of water injected = W/d in mL |
|
| mL of water injected in 10 injection = W/d *1000 µl=A |
|
| µl per injection=A/10 |
|
Acceptance Criteria:
The amount of water drawn by the auto injector per injection should be in between 19.0 µl and 21.0µl (i.e., ± 1.0 µl of the set value)
-
Injector Linearity:-
Instrument/Equipments/Standards used:
| Balance No | |
| Balance calibration due date | |
| Standard used | |
| Standard weight | |
| Standard Lot number | |
| HPLC Column details |
Preparation of Standard Solution (20 ppm Caffeine):
- Weighed ______ mg of Caffeine in 100 mL volumetric flask, dissolved and diluted up to the mark with Mobile Phase.
- Further dilute 10mL of this solution to 100mL with Mobile Phase.
Observation Table
| Sr. No | Injection Volume | Area |
| 1 | 5 µl | |
| 2 | 10 µl | |
| 3 | 20 µl | |
| 4 | 50 µl | |
| 5 | 100 µl | |
| Correlation coefficient(r2)
(Acceptance criteria r2 ≥ 0.999) |
||
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Injector Precision-
Instrument/Equipments/Standards used:
| Balance No | |
| Balance calibration due date | |
| Standard used | |
| Standard weight | |
| Standard Lot number | |
| HPLC Column details |
Preparation of Standard Solution (20 ppm Caffeine):
- Weighed ______ mg of Caffeine in 100 mL volumetric flask, dissolved and diluted up to the mark with Mobile Phase.
- Further dilute 10mL of this solution to 100mL with Mobile Phase.
Observation Table
| Sr. No. | Area |
| 1 |
|
| 2 |
|
| 3 |
|
| 4 |
|
| 5 |
|
| 6 |
|
| Average Area |
|
| RSD (%) |
|
Acceptance Criteria: RSD NMT 2.0 %
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Carryover Test :-
Instrument/Equipments/Standards used:
| Balance No | |
| Balance calibration due date | |
| Standard used | |
| Standard weight | |
| Standard Lot number | |
| HPLC Column details |
Preparation of Standard Solution (500 ppm Caffeine):
- Weighed ______ mg of Caffeine in 10 mL volumetric flask, dissolved and diluted up to the mark with Mobile Phase.
Observation Table
| Name | Area | % Carryover in Blank |
| Blank-1 | NA | |
| Sample | NA | |
| Blank-2 | ||
| Sample | NA | |
| Blank-3 | ||
| Sample | NA | |
| Blank |
Acceptance Criteria: NMT 0.02 %
(Area response of blank-2) – (Area response of blank-1)
Carryover % = ——————————————————— X 100
Average peak area of caffeine obtained from standard solution
Carryover % = ———————————————————
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Calibration of Detector:-
-
Wave Length Accuracy:-
Instrument/Equipments/Standards used:
Preparation of Standard Solution (20 ppm Caffeine):
- Weighed ______ mg of Caffeine in 100 mL volumetric flask, dissolved and diluted up to the mark with Mobile Phase.
- Further diluted 10mL of this solution to 100mL with Mobile Phase.
Observation Table for wavelength 205 nm
| Wavelength nm | Response | Wavelength Maxima/ Maximum response at nm | Acceptance Criteria | |
| Area | Height | |||
| 201 |
|
205nm ± 2 nm | ||
| 202 | ||||
| 203 | ||||
| 204 | ||||
| 205 | ||||
| 206 | ||||
| 207 | ||||
| 208 | ||||
| 209 | ||||
Observation Table for wavelength 245 nm
| Wavelength nm | Response | Wavelength minima/ Minimum response at nm | Acceptance Criteria | |
| Area | Height | |||
| 241 |
|
245nm ± 2 nm | ||
| 242 | ||||
| 243 | ||||
| 244 | ||||
| 245 | ||||
| 246 | ||||
| 247 | ||||
| 248 | ||||
| 249 | ||||
Observation Table for wavelength 273 nm
| Wavelength nm | Response | Wavelength Maxima/ Maximum response at nm | Acceptance Criteria | |
| Area | Height | |||
| 269 |
|
273nm ± 2 nm | ||
| 270 | ||||
| 271 | ||||
| 272 | ||||
| 273 | ||||
| 274 | ||||
| 275 | ||||
| 276 | ||||
| 277 | ||||
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Detector Linearity:-
Instrument/Equipments/Standards used:
Preparation of Standard Solution (0.5mg/mL Caffeine):
Weighed ______ mg of Caffeine in 50 mL volumetric flask, dissolved and diluted up to the mark with Mobile Phase.
- 0.25mg/mL standard Solution:
Diluted 1mL of stock solution to 20mL with mobile phase
- 0.5mg/mL standard Solution:
Diluted 2mL of stock solution to 20mL with mobile phase
- 100mg/mL standard Solution:
Diluted 4mL of stock solution to 20mL with mobile phase
- 125mg/mL standard Solution:
Diluted 5mL of stock solution to 20mL with mobile phase
- 250mg/mL standard Solution:
Diluted 10mL of stock solution to 20mL with mobile phase
- 500mg/mL standard Solution:
Use stock solution
Observation Table:
| Theoretical Conc.
(mg/ ml) |
Actual Conc.
(mg/ ml) |
Area of injection 1 | Area of injection 2 | Mean Area | Correlation Coefficient |
| 0.025 | |||||
| 0.050 | |||||
| 0.100 | |||||
| 0.125 | |||||
| 0.250 | |||||
| 0.500 |
Acceptance Criteria: Correlation coefficient ≥ 0.999
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Lamp Energy:-
Acceptance Criteria and results for DAD:
| Description | Acceptance criteria | Results | Status Pass/Fail |
| Lowest intensity in range 190 nm to 220 nm | Not less than 2000 cts. | ||
| Lowest intensity in range 221 nm to 350 nm | Not less than 5000 cts | ||
| Lowest intensity in range 351 nm to 500 nm | Not less than 2000 cts | ||
| Lowest intensity in range 501 nm to 950 nm | Not less than 4000 cts | ||
| Highest intensity in range 190 nm to 350 nm | Not more than 450000 cts | ||
| Highest intensity in range 700 nm to 950 nm | Not more than 300000 cts | ||
| Highest intensity for D2 alpha line | Not more than 1200000 cts |
Acceptance Criteria and results for VWD:
| Description | Acceptance criteria | Results | Status Pass/Fail |
| Highest intensity | More than 10000 cts | ||
| Lowest intensity | More than 200 cts | ||
| Average intensity | More than 5000 cts |
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Calibration of column Compartment:-
Observation Table for Right side Compartment
| Set Temperature (in °C) | Displayed Temperature on instrument
( in° C) |
Observed Temperature on thermometer
( in° C) |
Difference between set temp and observed temp on thermometer ( in° C) |
| 25.0 | |||
| 40.0 | |||
| 60.0 | |||
| 80.0 |
Observation Table for Left side Compartment
| Set Temperature (in °C) | Displayed Temperature on instrument
( in° C) |
Observed Temperature on thermometer
( in° C) |
Difference between set temp and observed temp on thermometer ( in° C) |
| 25.0 | |||
| 40.0 | |||
| 60.0 | |||
| 80.0 |
Acceptance Criteria:
All the observed thermometer temperature values are within ± 2°C of set value.
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Calibration of Autosampler Temperature:-
Observation Table
| Set Temperature (in °C) | Displayed Temperature on instrument
( in° C) |
Observed Temperature on thermometer
( in° C) |
Difference between set temp and observed temp on thermometer ( in° C) |
| 25.0 | |||
| 20.0 | |||
| 10.0 | |||
| 4.0 |
Acceptance Criteria:
All the observed thermometer temperature values are within ± 2°C of set value.
Remark: System complies/does not comply with respect to above test.
Performed By: Checked By:
Date: Date: