inhibitor/PASSIVATOR calculator

Do you need help calculating the right amount of inhibitor or passivator content for your transformer?

You can easy calculate the right amount of inhibitor or passivator to add to your transformer with our Inhibitor and Passivator Content Calculator. This small application is generating a recommended amount of Nynas Nyhib 10 or Nypass based on your input data.

Simply enter the information that the Calculator asks for, and you will get a recommendation of the amount needed for your transformer.


1. Transformer size

Please fill in the amount of oil in your transformer. You may give the information in litres or kilograms. If you choose to give it in litres, you must also mark the appropriate density.

20°C (= 0,876 kg/dm3)
65°C (= 0,847 kg/dm3)
Enter a valid numerical value in either kilograms or litres.

2. Inhibitor or Passivator content

Please fill in your current inhibitor or passivator content and your wanted inhibitor or passivator content.

1% = 10 000 ppm
0.1% = 1000 ppm
0.01% = 100 ppm

Current inhibitor or passivator content:
Wanted inhibitor or passivator content:
Enter valid numerical percentage values for the current and wanted inhibitor content.


Based on your data we recommend you to add the following amount of Nynas ​Nyhib 10/Nypass:

~{kilograms} kg (~{litres} litres), which is approximately {barrels} barrels