PDA Technical Glossary

A situation in which there is a reasonable probability that the use of or exposure to a violative product will cause serious adverse health consequences or death. (TR55)

A situation in which use of or exposure to a violative product or may cause temporary or medically reversible adverse health consequences or where the probability of serious adverse health consequence is remote.(TR55)

(a) As defined by 21 CFR Part 211.198- Complaint Files. (b) A written record of each complaint shall be maintained in a file designated for drug product complaints. The file regarding such drug product complaints shall be maintained at the establishment where the drug product involved was manufactured, processed, or packed, or such file may be maintained at another facility if the written records in such files are readily available for inspection at that other facility. 1.The written record shall include the following information, where known: the name and strength of the drug product, lot number, name of complainant, nature of complaint, and reply to complainant .2.Where an investigation under 211.192 is conducted, the written record shall include the findings of the investigation and follow-up. The record or copy of the record of the investigation shall be maintained at the establishment where the investigation occurred in accordance with 211.180. (TR55)

A musty-moldy off-flavor or taste imparted to the wine primarily due to the presence of 2, Combination Products 6-trichloroanisole (2, Combination Products 6-TCA) produced by the fungalo-methylation of 2, Combination Products 6-tricholorophenol (TCP) associated with corks, wooden barrels, and construction materials in wineries. (TR55)

An array of electronic sensors designed to selectively identify chemicals responsible for odors. The zNose™ system is one example that is commercially available and consists of a vapor pre-concentrator, a direct-heated high-speed chromatography column, a solid-state sensor and a programmable gate array microprocessor system. (TR55)

The moisture content of wood below the fiber saturation point is a function of both the relative humidity and the temperature of surrounding air. The equilibrium moisture content (EMC) is the moisture content at which the wood is neither gaining nor losing moisture; this however, is a dynamic equilibrium and changes with relative humidity and temperature. (TR55)

The FAO’s mandate is to raise levels of nutrition, improve agricultural productivity, better the lives of rural populations, and contribute to the growth of the world economy. (TR55)

Two types of methods to include kiln drying versus steam heat. (TR55)

A process of drying lumber in a dry kiln to a specified moisture content using the correct drying schedule (combination of dry- and wet-bulb temperature settings). Kiln-drying suffices as a heat treatment. This type of treatment is not ISPM certified and would not necessarily have an HT (heat-treated) stamp. However, this is a normal process for drying of lumber. (TR55)

The moisture content of wood is calculated by the following formula: Moisture content = (Mg-Mod)/Mod. Where Mg is the green mass of the wood and Mod is its oven-dry mass (the attainment of constant mass generally after drying in an oven set at 103 ± 2 °C for 24h). The equation can also be expressed as a fraction of the mass of the water and the mass of the oven-dry wood rather than a percentage. For example, 0.59 kg/kg (oven-dry basis) expresses the same moisture content as 59% (oven-dry basis). (TR55)

Odors are perceived through stimulation of receptor cells and nerve endings of the trigeminal nerve in the olfactory epithelium, which lie in a small area in the upper reaches of the nasal cavity. Odors are perceived directly through the nose (orthonasal) or during gestation when volatile odorous organaohalogens reach the olfactory centers through the nasopharyneal passage (retonasal). (TR55)

The lowest concentration of a compound detectable to 50% of the people tested. (TR55)

The major organohalogens or organic compounds containing chlorine, bromine or iodine of interest are halophenols and haloanisoles, especially 2,4,6 tricholorophenol (TCP), 2, 4, 6 tribromophenols (TBPs), 2, 4, 6 trichloroanisole (TCA), and 2, 4, 6 tribromoanisole (TBA). (TR55)

Pallets are flat transportation structures that are used in the efficient shipping, warehousing and in-plant distribution of goods. A loaded pallet may be moved using a fork lift or pallet jack. They are usually 48 x 40 inches in dimension. They are most commonly constructed of wood but may be plastic, metal or even paper. (TR55)

A standardized reusable metal box used for safe, efficient and secure storage and movement of materials and products within a global containerized intermodal freight transport system. Intermodal implies that the container can be moved from one mode of transport to another without unloading and reloading. They are the main type of equipment used in intermodal transport, particularly when one of the modes of transportation is by ship. They can also be referred to as ISO containers because the dimensions have been defined by ISO. Other types of transportation containers can include truck trailers. (TR55)

Plastic sheets often made of polyethylene and sometimes used in distribution/transportation warehouse and shipping systems to separate pallet loads of product. Slip sheets may be important due to the ability of polyethylene to concentrate TBA in proximity to product. (TR55)

A continuous, longitudinal, solid or notched beam-component of a pallet used to support deck components, often identified by location as the outside or center stringer. (TR55)

A pallet that uses a frame of three or four parallel pieces of lumber (called stringers). The top decks are affixed to the stringers to create the pallet structure. (TR55)

Water Activity, Aw is the ratio of the vapor pressure of water in a product (P) to the vapor pressure of water in a product (P) to the vapor pressure of pure water (Po) at the same temperature. It is numerically equal to 1/100 of the RH generated by the product in a closed system. It is a measure of the free or available moisture in the material. Note: Water activity ≠ water content. RH can be calculated from direct measurements partial vapor pressure or dew point, or from indirect measurements by sensors whose physical or electric characteristics are altered by the RH to which they are exposed. Microorganisms need available water within a pharmaceutical product, as well as nutrients and minerals, to proliferate. Water activity, and not water content, is a better measure of the free water, in contrast to bound water that microbial cells require for metabolic activity and osmotic regulation. Effects of reduced Aw on microbial growth include a longer lag phase, slower growth rate, lower numbers of organisms in the stationary phase, and reduced microbial toxin production; below a specified Aw for an organism, microbial growth will not occur. (TR55) (TR67)