Wasser® Brand System 판넬(No.6) 과 POR-15® System 판넬(No.8) 은 1/4인치 이상 하부절단부분까지 침투되어 실패한 것으로 고려하였으나 Rust Bullet® 판넬(No.2) 과 Rust-oleum® Cold Galvanizing Compound 판넬(No.5)은 아직 도막이 좋은 상태를 보이므로 이번 시험을 통과한 것으로 하였다.
(Report No.27935R2 National Testing Standards, Inc.
“Test No. 4:
Method: After 500 hours of salt fog/spray the remaining four test panels were submerged in sea water (ASTM D-870) for 336 hours (2 weeks)
Results: Panel numbers 6 and 8 undercut by more than ¼ of an inch were considered failures. Panel numbers 2 and 5 still exhibited good film integrity and were considered as passing this phase of testing.”