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(5.9 mils min.) Standard 2 of 5 (STF) PCS value . 0.9 Reflection intensity difference between white and black bars . 80% CODE39 CODABAR (NW7) 0.19 mm min. (7.5 mils min.) CODE93 (PCS value . 0.45) CODE128 * The all above values are under the following conditions: • Depth of field: 68 mm (2.7") • Ambient illuminance: 500 to 3000 lux. (Xenon lamp) (2) Optical Properties Required for Bar Code Labels White bars: Reflection intensity 45% min. Black bars: Reflection intensity 25% max. PCS value 0.45 m