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Listed below are some technical bulletins available here at Purpora Engineering Online. Click the "View" link to access the bulletin. NOTE: Abode Acrobat Reader is required to read these bulletins.
| Bulletin No. | Title | View |
| 20 | Line Test Tolerance |  |
| 40 | Test Protocol Changes for Petro-Tite Line Tester | |
| 50 | RP for Enviroflex I and II Piping Systems | |
| 55 | RP for Environ Geoflex Piping Systems | |
| 57 | RP for Containment Tech. Perma-Flexx Piping | |
| 58 | RP for Advanced Polymer Poly-Tech Piping | |
| 60 | Study for OPW with regard to Pisces™ Flexible Pipe | |
| 61 | Testing Large Lines | |
| 68 | Why Do We Have A Tolerance With Volumetric Precision Line Testing? | |
