TEM015 Issue date

Cleaning Validation – Swab Test

(Ref. VAL020)

Project number:

Protocol Number:

Product/Active:

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SWABBING RECOVERY STUDIES

1. Test Description
2. This test is to be conducted to document the validation of a TOC analysis method for use in measuring samples for cleaning validation. A parallel analysis of swab samples will be carried out and compared using TOC and HPLC analysis. Standard solutions will be applied to stainless steel plates, dried and the residue removed by swabbing using the Texwipe TX761 swab. Assessment of Linearity, Accuracy (recovery), LOQ, LOD and precision of the swabbing method will be determined.
1. Test Objective
1. Determine the linearity and precision of a series of standards swabbed from a stainless steel plate and measured by TOC and HPLC over a known concentration range.
2. Determine the accuracy (recovery) of a series of standards swabbed from a stainless steel plate and measured by TOC and HPLC over a known concentration range.
3. Determine the Limit of quantitation and limit of detection of a series of standards measured by TOC and HPLC over a known concentration range.
4. Determine correlation between HPLC and TOC analysis.
5. Determine the visually clean limit.
6. Determine the final HPLC and TOC swabbing limits based on recovery studies.

3. Acceptance Criteria

Test	Measured Response	Acceptance Criteria
Objective
3.1. Linearity	The correlation coefficient	3.1.1. HPLC: equal to or greater than 0.997
	(r 2) for the linear concentration range.	3.1.2. TOC: equal to or greater than 0.980
3.2. Precision	% RSD	3.2.1. HPLC: The recovery %RSD less than or equal to 10.0%.
		3.2.2. TOC: The recovery %RSD less than or equal to 15.0%.

File Location: Date Printed: Page 1 of 7

TEM015 Issue date

Cleaning Validation – Swab Test

(Ref. VAL020)

important that all the alcohol has evaporated from the surface prior to swabbing).

4.2.2. Place the required number of swabs into the established volume of extraction solvent. Remove swab(s) and swab the designated area according to the established procedure outlined in the Cleaning Validation SOP G 1.7 or as outlined in the modified analysis method. Place the swab(s) back into the extraction solvent and vortex for 1 minute. Remove swabs from vial. Analyse the resultant extracts by HPLC and TOC.

Residue recovery will be calculated as follows:

where % recovery = result found x 100 result expected

1. Determine the visually clean limit while performing the swabbing studies by observing the minimum concentration at which the active residue is visible on the surface of the stainless steel test plate to the human eye.
2. Tabulate results as detailed in results section and plot linear regression and document results of linear regression analysis for both HPLC and TOC analysis.

5. Results

3.1. Linearity Swabbing Active Residue

3.1.1. HPLC Analysis

Active	Concentration	Peak Area of Active
(ug/mL)
(50%)
(100%)
(400%)

• Plot Concentration vs Peak Area (calculate linear regression)
• Coefficient of Determination (R) =

2

3.1.2 TOC Analysis

Actual	Total Organic	Measured Total Organic
Carbon	Concentration	Carbon Response (ppm)
(ppm)
(50%)
(100%)
(400%)

• Plot Actual TOC Concentration (ppm) vs Measured TOC Response (ppm)
• Coefficient of Determination (R) =

2

3.2 Accuracy Swabbing active residue / Precision

For each measured response over the concentration range examined in the Linearity test calculate % recovery and % RSD for each of the triplicate samples.

•where % recovery = result found x 100

File Location: Date Printed: Page 3 of 7

	TEM015
	Issue date
Cleaning Validation – Swab Test
(Ref. VAL020)

MAC per cm 2 level	Average (Budesonide) ppm HPLC	Recovery	Average (Pulmicort caTOC	recovery rbon) ppm
(50%)
(100%)
(400%)

• Plot Average Recovery Active 1 ppm HPLC vs Average recovery Active 2 ppm TOC

Linear regression line = Correlation coefficient (R) =

2

Coefficient of determination (R) =

5.2. Visually Clean Limit

The Visually clean Limit must be determined while performing the swab recovery studies. This is done by visually inspecting the surface and determining the highest concentration of active residue that is not easily detectable by visual inspection. This concentration is then recorded as the Visually clean limit.

Visually Clean Limit = _________________

5.3. Determining Final HPLC and TOC Swabbing Limits Based on Recovery Studies

HPLC Swabbing Limits

Determine the lowest and most conservative active recovery value obtained during the method validation study for HPLC analysis. Lowest HPLC swab recovery value = ____________ Calculate the final HPLC swabbing limit for the surface tested:

2

Active MAC per cm of total surface area x swabbing area x lowest swab recovery average recovery from swabbing material = “X” mg per swab

divide by extraction volume and multiply by 1000 to give ppm limit per swab HPLC Swabbing Limit = __________________________________= ________ mg per swab

HPLC Swabbing Limit (ppm) = ________________________= __________ ppm per swab Example Calculation:

22

0.000417 mg/cm x 100 cm x 0.6864 = 0.02898 mg per swab 0.9877 If each swab is extracted using 25.0 mL of water, the limit becomes:

→→→→0.02898mg/25mL x 1000 g/mL = 1.16 g/mL or 1.16ppm per swab.

5.4. TOC Swabbing Limits

Determine the lowest and most conservative active recovery value obtained during the method validation study for TOC analysis. Lowest TOC swab recovery value = ____________

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	TEM015
	Issue date
Cleaning Validation – Swab Test
(Ref. VAL020)
DOCUMENT REVISION HISTORY

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