Articles by Richard J. Forsyth - Pharmaceutical Technology

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Articles by Richard J. Forsyth
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Application of Visible-Residue Limit for Cleaning Validation

Oct 2, 2005
By: Richard J. Forsyth, Vincent Van Nostrand

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.

Using Visible Residue Limits for

Apr 2, 2005
By: Richard J. Forsyth

An increasing number of new compounds are being introduced into pharmaceutical pilot plants.The knowledge base for these compounds regarding their toxicities,physical handling, and cleaning is limited.The authors examine various approaches for addressing the cleaning validation of new compounds and discuss the role of determining appropriate visible residue limits.

Visible-Residue Limit for Cleaning Validation and its Potential Application in Pharmaceutical Research Facility

Oct 2, 2004
By: Richard J. Forsyth, Vincent Van Nostrand, Gregory P. Martin

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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