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.
Best Answer: stands for latin, pro re nata which means for the situation's needs and is used in medical prescriptions to mean as needed. also .prn can be computer printer file in some systems. And many others, see acronym list in source below. It usually means as needed in reference to medications.