-------------- Q -------------- QRs. See Quantitative Restrictions. QUANTITATIVE RESTRICTIONS (QRs). Explicit limits, or quotas, on the physical amounts of particular commodities that can be imported or exported during a specified time period, usually measured by volume but sometimes by value. The quota may be applied on a "selective" basis, with varying limits set according to the country of origin, or on a global basis that only specifies the total limit and thus tends to benefit more efficient suppliers. Quotas are frequently administered through a system of licensing. GATT Article XI generally prohibits the use of quantitative restrictions, except under conditions specified by other GATT articles: Article XIX permits quotas to "safeguard" certain industries from damage by rapidly rising imports; Articles XII and XVIII provide that quotas may be imposed for balance of payments reasons under circumstances laid out in Article XV; Article XX permits special measures to apply to public health, gold stocks, items of archaeological or historic interest, and several other categories of goods; and Article XXI recognizes the overriding importance of national security. Article XIII provides that quantitative restrictions, whenever applied, should be non-discriminatory. See also Balance of Payments Consultations; Discrimination; Export Quotas; Export Restraints; General Agreement on Tariffs and Trade; Licensing; Multi-Fiber Arrangement Regarding International Trade in Textiles; Residual Restrictions; Safeguards; Section 22; Sensitive Products; Specific Limitations on Trade; and Tariff Quota. QUARANTINE, SANITARY AND HEALTH LAWS AND REGULATIONS. Government measures to protect consumer, animal and plant health by regulating the use of dangerous preservatives and other additives in foods. The lack of internationally accepted standards makes it difficult to distinguish between legitimate health standards and protectionist measures. A Uruguay Round agreement covering sanitary and phytosanitary standards will recognize norms set by specified international standard-setting bodies as the baseline standards for trade, ensure to the maximum extent possible that standards are scientifically justifiable, and for the first time, establish a meaningful dispute settlement procedure for health and sanitary issues. See also Customs and Administrative Entry Procedures; Discrimination; Packaging, Labeling and Marking Regulations; Standards; and Uruguay Round. QUID PRO QUO. See Reciprocity. QUOTAS. See Quantitative Restrictions; and Tariff Quota.