PDA Technical Glossary
PDA Technical Reports are highly valued membership benefits because they offer expert guidance and opinions on important scientific and regulatory topics and are used as essential references by industry and regulatory authorities around the world. These reports include terms which explain the material and enhance the reader’s understanding.
The database presented here includes the glossary terms from all current technical reports. The database is searchable by keyword, topic, or by technical report. Each definition provided includes a link to the source technical report within the PDA Technical Report Portal.
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Backstop (Finger Plate or Thumb Plate)
Feature that enhances the area to hold the syringe and is usually designed to avoid accidental removal of the plunger from the back. By design, it may also serve as a flange extender to facilitate holding of the syringe during injection. (TR 73)
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Breakthrough Limited
A filtration operation resulting in a significant rise in filtrate turbidity accompanied by a small increase in differential pressure. This occurs when the adsorptive capacity of the filter is reached, resulting in the passage of particles smaller than the pore size of the filter that would normally be removed by adsorption. (TR45)
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Brevundimonas Diminuta (B. diminuta)
Small bacteria (0.3–0.4 &mum in diameter by 0.6–0.1 &mum long) used to challenge a sterilizing grade filter during validation testing. [Formerly Pseudomonas diminuta](TR45)
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Bulk Packaged Product
Consists of solid, liquid, or frozen product in a bulk container configuration such as a bag, tank, or drum. The product may be in these container configurations between process steps or prior to filling into vials, ampoules, cartridges, or syringes. (TR39)