Marking & Labeling Systems - Surfaces/Additional Conditions
Application Surfaces
This list includes some of the more common application surfaces on which Marking & Labeling Systems are Recognized. All surfaces referenced in Recognitions are considered smooth, flat, and rigid unless otherwise specified. Painted surfaces are on metal substrates.
| Application Surface | Abbreviation |
| Acrylic | (AC) |
| Acrylic paint | (AC PT) |
| Acrylonitrile butadiene styrene | (ABS) |
| Alkyd paint | (AK PT) |
| Aluminum | (AL) |
| Chromate treated metal | (CTM) |
| Epoxy | (EP) |
| Epoxy paint | (EP PT) |
| Epoxy powder paint | (EP PDR PT) |
| Galvanized steel | (GS) |
| Melamine | (ME) |
| Nylon, polyamide | (PA) |
| Phenolic, Phenol Formaldehyde | (PH) |
| Polybutylene terephthalate | (PBT) |
| Polycarbonate | (PC) |
| Polyester paint | (PER PT) |
| Polyester powder paint | (PER PDR PT) |
| Polyethylene | (PE) |
| Polyethylene terephthalate | (PET) |
| Polyphenylene oxide/ether | (PPOX) |
| Polyphenylene sulfide | (PPS) |
| Polypropylene | (PP) |
| Polystyrene | (PS) |
| Polyurethane powder paint | (PUR PDR PT) |
| Polyvinyl chloride | (PVC) |
| Porcelain | (PRCLN) |
| Stainless steel | (SS) |
| Unsaturated polyester, thermoset | (UP) |
Labels for Use in Special Environments
In addition to being evaluated for indoor use, indoor dry use, or outdoor use, labels may be evaluated for environmental conditions specific to certain end-product applications. Below is a list of some of the additional conditions for which labels could be evaluated.
| Code | Additional Conditions |
| C | Occasional exposure to Cooking Oil |
| DD | Occasional exposure to Dishwashing Detergents |
| DL | Occasional exposure to Laundry Detergents |
| E25 | Occasional exposure to splashing of gasoline/ethanol blends up to 25% ethanol |
| E85 | Occasional exposure to splashing of gasoline/ethanol blends up to 85% ethanol |
| F1 | Occasional exposure to Fuel Oil No. 1 |
| F2 | Occasional exposure to Fuel Oil No. 2 |
| FE | Suitable for use on Fire Extinguisher shells |
| G | Occasional exposure to Gasoline splashing |
| HZ | Suitable for use on Class I, Division 1, Groups C and D Hazardous Location products |
| K | Occasional exposure to Kerosene |
| O | Occasional exposure to Lubricating Oil |
| PL | Also suitable for use on portable ladders |
| RT(1) | Also complies with UL 514A, UL 60950-1, UL 60335-1, UL 60745-1, UL 60974-1, UL 61058-1 and UL 60065 marking durability rub test requirements |
