SOP for Verification of System Suitability Test

1.0 OBJECTIVE

To Verify system suitability values manually v/s software.

2.0 SCOPE

This procedure is applicable to verify system suitability software results Vs manually of the high-performance liquid chromatography.

3.0 RESPONSIBILITY

3.1 Doing: Technical Assistant
3.2 Checking: Executive/ Manager

4.0 ACCOUNTABILITY

Head of the Department

5.0 PROCEDURE

5.1 Frequency: Once in 6 months.
5.2 Operate the instrument as per respective standard operating procedure of HPLC.
5.3 Prepare the mobile phase consisting of 70% methanol. : 30 % of water.
5.4 Prepare a mixture of 0.1 % Benzene and 0.1% Toluene in methanol.
5.5 Set flow rate at 1.0 ml/min.
5.6 Allow the system to be saturated with mobile phase for at least 15 minutes before injecting the test sample.
5.7 Record the area and retention time of both Benzene and Toluene in methanol.
5.8 Calculate the system suitability parameters with the help of software such as resolution, tailing factor and theoretical plate.
5.9 Now calculate the tailing factor, resolution and theoretical plate manually by following formula:

Theoretical Plate :  N = 16 (t/w)²

Where t = R.T of the component

          w = width of the component

Resolution :  2(t₂ – t₁)/ w₁ + w₂  
Where t₁ = R.T of I^st components

              t₂ = R.T of II^nd components                

         w₁ = Width of I^st components

          w₂ = Width of II^nd component  

Tailing :  T =  w/2f

Where  w = width of peak

            f  = width of half peak at 5 % height 

The performance of software of the instrument is satisfactory if the all the parameters of the system suitability test are within the acceptance criteria.

Related: Calculation of Relative Response Factor (RRF) in HPLC

Verification of system suitability parameters

Name of software :___________

1.  Resolution :

     As per software  = _________________

                                             2 (t₂ – t₁)

    By manually  =  R  =  ------------------

                                             w₁ + w₂

                                  = ----------------- ( +/- 10 %)

2.  Tailing  :

     As per software = ________________

     By manually  =    T =  w/2f

                           = ------------------------( +/- 10%)                   

3)  Theoretical Plate :      

     As per software =______________ 

     By manually  =    N = 16 (t/w)²

                                

                           = ------------------------ ( +/- 10%)

Remarks: Comply/Does not comply

Acceptance criteria :  Difference should be within +/- 10.0 %

6.0 ABBREVIATION

6.1 % = Percentage
6.2 ml = millilitre
6.3 RT = Retention time

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