Approximate Dosing for Cortec Hydrotesting Additives

Approximate Dosing for Fresh Water Additive

Product

Metals Protected

During Testing

1-3

Months

6-12

Months*

12-24 Months*

VpCI-641

Multimetal

500-750pppm

1000ppm

-

-

VpCI-611

Ferrous,

aluminum, galvanized steel, NO YELLOW

2.5-10wt%

5-10 wt%

10-15 wt%

20wt%

VpCI-609

Ferrous,

aluminum, galvanized steel, NO YELLOW

0.5-1wt%

1-1.5 wt%

5 wt%

5 -10wt%

VpCI-308

Multimetal

0.5-1wt%

1-1.5 wt%

3-5 wt%

5-10wt%

Versions of S-69 and

VpCI-649

Multimetal

0.3-0.5wt%

0.5-1wt%

0.5-1wt%

0.6-1wt%

VpCI-649 Powder and

S-69 Powder

Multimetal

0.2-0.35%

0.35-0.7%

0.35-0.7%

0.4-0.7%

VpCI-377

Multimetal

0.5-0.75wt%

0.5-1wt%

2-3 wt%

3-5wt%

 

Approximate Dosing for Cast Iron in Fresh Water

Product

Metals Protected

During Testing

1-3

Months

6-12

Months*

12-24 Months*

VpCI-609

Cast Iron

1.5-2.5 wt%

-

-

-

VpCI-611

Cast Iron

10-12.5 wt%

10-15wt%

10-20wt%

20wt%

VpCI-417P

Cast Iron

0.2 wt%

0.2-

0.5wt%

0.5-1wt%

1-2wt%

S-69P

Cast Iron

0.75-2wt%

5wt%

5-7 wt%

7wt%

M-370

Cast Iron

5wt%

10wt%

10wt%

10wt%

M-640L

Cast Iron

2.5wt%

5wt%

5wt%

NE

M-95

Cast Iron

2.5wt%

5wt%

5wt%

NE

 

Approximate Dosing for Brines Additives TDS <0.5wt%, CL<0.1wt%

Product

Metals Protected

During Testing

1-3

Months

6-12

Months*

12-24 Months*

VpCI-644

Multimetal

0.2wt%

-

-

-

VpCI-645

Multimetal

0.5wt%

-

-

-

VpCI-611

Ferrous, aluminum,

galvanized steel, NO YELLOW

5wt%

5wt%

-

-

VpCI-609

Ferrous,

aluminum, galvanized steel, NO YELLOW

1-3wt%

1-3wt%

5- 10 wt%

-

M-645

Multimetal

Dosage

based

on area

to be

protected

1250 ft2/gal

(30.7m2/L)-

Versions of S-69 and

VpCI-649

Multimetal

0.5-1wt%

0.5-1wt%

-

-

 

Approximate Dosing for Sea Water Additives

Product

Metals Protected

During Testing

1-3

Months

6-12

Months*

12-24 Months*

VpCI-644

Multimetal

0.3-0.5wt%

0.75-1wt%

-

-

VpCI-645

Multimetal

0.75-1wt%

0.75-1wt%

-

-

S-69P

Multimetal

5wt%

5wt%

-

-

VpCI-611

Ferrous,aluminum, galvanized steel,

NO YELLOW

5wt%

5wt%

-

-

M-645 or Ecoline 3220

Multimetal

Dosage

based

on area

to be

protected

1250 ft2/gal

(30.7m2/L)-

 

Note: Solutions can be reused, provided the concentration level of each is checked before reuse.


*For long term protection after hydrotesting, it is best to drain sytem well and use additional fogging of VpCI material or rinse with a long term corrosion inhibitor in tap water. Additionally, an inspection should be performed every 6-12 months and VpCI should be reapplied if needed. Long term protection may vary due to condition of metal and sealing of vessel.