Hydro Testing Additives for Corrosion Control

For assistance with your hydro testing additives and corrosion control for water systems and lay up by email, click on VCI Selection Help below:

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Fresh Water Hydrotesting Additives Typical Uses

Product Application RateMetals Protected Term of Corrosion Protection
Vappro-848 0.30 % by Weight Multi-metal Corrosion Protection up to two weeks
Vappro-848 1.0 % to 2.0 % by Weight Non Ferrous & Ferrous Metals6 Months to 18 Months
Vappro-748  500-1000 ppm Ferrous Metals in Corrosive Solutions of up to 500 PPM of Chlorides   Long Term
Nox-Rust 1200 1:10 dilution with water Ferrous, aluminum, galvanized steel up to 6 months
VCI-1 Powder 0.25% to 0.5% by weight Ferrous, aluminum, galvanized steel and stainless steel one to 5 months
VCI-1 Powder  1.0 % to 2.0 % Ferrous, aluminum, galvanized steel 6 months to 24 months +
Vappro-841 0.5 to 0.75 % Ferrous and Non-Ferrous 30 days to 6 months
VCI-1010 0.25 % to 2.0 % Ferrous, aluminum, galvanized steel in the presence of non-ferrous metals 2 Weeks to 12 months + 

Hydrotesting Additives For Brines

(TDS below 0.5%, Cl- concentration <0.1%)

Product Application Rate Metals Protected Term of Corrosion Protection
VCI-1 Powder 1.0 % to 2.0 % Ferrous, aluminum, galvanized steel6 Months to 12 Months
VCI-1 Powder 2.0 % to 3.0% Ferrous, aluminum, galvanized steel 12 Months to 2 years
 VCI-1010 2.0 % to 3.0 % Ferrous, aluminum, galvanized steel in the presence of non-ferrous metals 6 Months to 2 Years
Vappro-748 500 -1000 PPM Ferrous metals in solutions containing up to 500 PPM Chloride Long Term
Vappro-8480.5 % by Weight Multi-metal Up to 30 days
Vappro-8481 % Multi-metal Up to 6 Months
Vappro-848 2% Multi-metal 12 Months +

Salt Water Hydrotesting Additives

Product Application RateMetals Protected Term of Corrosion Protection
Vappro-748 6500 + PPMFerrous metals in solutions containing up to 500 PPM Chloride Long Term
VCI-1 1 - 2 % by weightFerrous & aluminum up to one week
VCI-1 2.0% by weightFerrous & aluminum one month +
Vappro-848 Vappro-841 2 -3 % by weight Multi-metal 6 - 12 months

Hydrotesting Product Concentrations for Cast Iron

VCI-1 Powder

Buy VCI-1

1 - 3% by weight 1 to 3 % in water Also good for submerged metals
VCI-1200
Buy VCI-1200 Liquid
1:5 dilution in H2O 1 part VCI-1200 with 5 parts waterAlso good for submerged metals
 Vappro-848 Vappro-841 Buy 2% - 3% Dissolve in water VCI-1 Powder is Recommended for Cast Iron

**Please note: VCI-1 Powder solutions can be reused in all cases, provided the concentration level of each is adequate before reuse of the solution.

For Preservation in excess of 12 months it is recommended to follow hydro testing with an additional method of corrosion protection such as applying corrosion inhibitor powder by dry fogging or additional methods of corrosion control.

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