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Frequently Asked Questions

What is the PSPA?

The PSPA is the Photoluminescent Safety Products Association. Members share the objectives of promoting the use of quality photoluminescent products and materials in safety applications and setting, monitoring and maintaining quality standards.

The PSPA has developed a classification system for photoluminescent products and materials. This classification is used to determine the subsequent application of products in escape route marking systems.

 

Luminance decay
mcd/m2
2 mins 10 mins 30 mins 60 mins Time to 0.3mcd/m2
Class III > 8.5 1.5 0.5 >80 minutes
Class II > 12.5 2.9 1.2 >170 minutes
Class I > 17 4 1.7 >240 minutes
Class A 108 23 7 3 >450 minutes

 

As a result of innovative new pigments being introduced and processed, three further classifications are proposed for materials that are currently available in the market. These materials all exceed Class I performance and are hence considered special cases of this class and are as follows:

 

Luminance decay
mcd/m2
2 mins 10 mins 30 mins 60 mins Time to 0.3mcd/m2
Class B > 210 50 15 7 >900 minutes
Class C > 690 140 45 20 >1800 minutes
Class D > 1100 260 85 35 >2000 minutes


PSPA