The data to encode is split in half and encoded as a split-level barcode, and this format is used if the width of the barcode is an issue. 1  The height of the top row of the GS1 DataBar Stacked barcode is 5 times the X dimension, and the height of the bottom row is 7 times the X dimension. 2  Fig.
Pitting resistance equivalent number (PREN) is a predictive measurement of the corrosion resistance of various types of stainless steel. In general: the higher PREN-value, the more corrosion resistant the steel. Steels with PREN-values above 32 are considered seawater (corrosion) resistant.
Health Care Professionals. PRN is an abbreviation for the Latin term, pro re nata which loosely translates to as needed. PRN is a term commonly used by healthcare employers and professionals to describe short-term, contract, part-time, or fill-in work by a nurse or allied health professional.