Articles by Vincent Van Nostrand - Pharmaceutical Technology

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Articles by Vincent Van Nostrand

Vincent Van Nostrand


Articles
Correlation of Visible-Residue Limits with Swab Results for Cleaning Validation
November 2, 2006

The correlation between swab assay results and visible-residue limits (VRLs) for cleaning validation was examined. Previously completed validation studies were reviewed to compare swab results with recently determined VRLs. A current cleaning validation study evaluated both swab testing and VRL. Unexpected swab results led to an investigation, which showed the value of establishing the VRL in conjunction with swab recoveries for cleaning validation programs.

Risk-Management Assessment of Visible-Residue Limits in Cleaning Validation
September 2, 2006

Before formal cleaning validation programs were instituted, visual inspection was the primary means of determining equipment cleanliness. The use of visual inspection is still typically a component of a cleaning validation program and for routine inspections of cleaning effectiveness, but the use of visual inspection as a sole criterion for equipment cleanliness has not been successfully implemented as a valid approach for cleaning validation.

Application of Visible-Residue Limit for Cleaning Validation
October 2, 2005

Formulation residue, observer viewing distance, light intensity, viewing angle, observer viewing position, and observer-to-observer variability affect the ability to confirm the cleanliness of manufacturing equipment.

Application of Visible-Residue Limit for Cleaning Validation Richard J. Forsyth and Vincent Van Nostrand
October 2, 2005

Formulation residue, observer viewing distance, light intensity, viewing angle, observer viewing position, and observer-to-observer variability affect the ability to confirm the cleanliness of manufacturing equipment.

Visible-Residue Limit for Cleaning Validation and its Potential Application in Pharmaceutical Research Facility
October 2, 2004

Evaluations have shown, in most cases, visual observations are sensitive enough to verify equipment cleanliness. An experiment was conducted to explore the possibility of using a visible-residue limit as an acceptable cleaning limit in a pharmaceutical research facility, including an evaluation of the limits and subjectivity of ?visually clean? equipment.

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