PROTECTO 401 VS. POLYAMIDE COAL TAR EPOXY

TEST

PROTECTO 401

POLYAMIDE COALTAR EPOXY

PERMEABILITY Procedure “A”of ASTM E-96-6642 Day Test Duration

0.00 perms

.22 perms

NOTE:

The lower the permeability rating, the less water borne chemicals can penetrate the lining.

IMMERSION

in 20% sulfuric acid

No blisters or

delamination of lining

after 24 months.

Blisters over all of the tested area of lining after 3 months.

Test terminated.

SALT SPRAY

5% solution

ASTM B 117-85

Scribed

24 months

No undercutting at

scribe. No damage

to panel.

After 4.7 months no

undercutting at scribe. No

damage to panel

NOTE:

All materials were tested with an average film thickness of 40 mils.