There are dozens of possible sources for pipe markers.

1. Colors that match the ANSI color codes. Many pipe markers cut corners and print a white  legend on a solid colored vinyl background. This creates two problems: (1) the vinyl does not match the ANSI standards for color and (2) the white print is faint. The ANSI guidelines for pipe marker require that pipe makers match the Safety Color Codes for Marking Physical Hazards. This is specified in ANSI Z535.1. Unfortunately, many pipe markers are inconsistent; for example, the vinyl green is much less intense than the Safety Green required. Finally, when a white is printed onto a solid colored background, the white is rarely opaque.
2. Overcoating. We recommend a clear overcoat to protect the print from solvents, certain graffiti and abrasion.
3. Legible type font. Too many pipe markers are hard to read. This problem is exacerbated with the use of hard-to-read type fonts. We use Clearview, which has been proven to be more legible than others.
4. Compliance to regulation. If possible, comply with the ANSI guidelines for marking pipes. This proscribes the letter heights, length of color field and legend that are needed for your plant. There are situations, however, that require a different type of marker.
5. Good economics. Check out the prices! The costs of pipe markers add up.
6. Durable materials. We use a 5-7 year outdoor polymeric vinyl. This is the premium grade calendered vinyl. Vinyl is chosen for its ability to conform and easy of installation. In certain plants, however, you may need to use a material that is halogen free.
7. Acrylic adhesive. We recommend a heavy coat-weight of an solvent-based acrylic adhesive. Too soft an adhesive will flag; too hard of an adhesive may be frustrating to install.