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Are Antifrogen products available in other colors? |
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Antifrogen products are available in one specific color only. These are in particular: Antifrogen N - yellow, Antifrogen L - blue, Antifrogen KF - colorless, Antifrogen SOL - green fluorescing, Protectogen - yellowish.
Other colors will not be offered. |
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What is the temperature range where Antifrogens can be used? |
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The following chart shows the minimum and maximum application temperature for each individual Antifrogen product:
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Can zinc galvanized pipes be used in an installation? |
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Generally, zinc galvanized pipes should be avoided. Glycol water mixtures (reduced surface tension) are able to dissolve the zinc surface than water alone. Normally it is no problem to get rid of the zinc mud by means of an appropriate filter (100-150 µm). If this is not done, originated zinc glycolates could damage the mechanical seal of the circulating pump.
As for corrosion effects, the removal of the zinc surface has no influence on the corrosion behavior because active inhibitors are protecting the lower steel surface from corrosion. |
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Why should the usage of pure glycol or car antifreeze in the system be avoided? |
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Pure glycols without any corrosion inhibiting additives are much more aggressive than water alone. Reaction with present oxygen can lead to the formation of organic acids which attack the unprotected metal surfaces. Moreover, the surface tension of glycol water mixtures is lower than with pure water. Rust layers (mostly ferric oxide) can be dissolved easily, uncovering fresh metal surfaces which can be oxidized again: The corrosion process will never stop.
Most often car coolants show a less high inhibitor content than comparable heat transfer fluids. In addition, the reserve alkalinity of these products is significantly lower so that originating acidic components cannot be buffered sufficiently over a long period. Due to these facts, car manufacturers prescribe regular change intervals (every two or three years) where car coolant needs to be completely replaced. However, Antifrogen products - proper operation of the heat transfer fluid and the system assumed - can remain in the installation over a very long time. |
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How can I check the frost resistance of my Antifrogen water mixture? |
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To check the frost resistance of your Antifrogen water mixture, special antifreeze testers can be used. Please note that different antifreeze testers will be needed for different Antifrogen products, due to the different chemical basis of these products. Likewise, the frost resistance can be determined by measuring the refractive index of the heat transfer fluid. Both products - antifreeze testers and refractometers - can be purchased from your local dealer. |
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Can I mix Antifrogen with products from other manufacturers? |
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Generally, Antifrogen products can be mixed with different brands with the same chemical basis. In particular cases, unforeseen reactions (e.g., formation of sediments) are possible. We can make no statement on the resulting corrosion protection properties of the original mixture. Product liability is excluded in those cases. |
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What is the required minimum concentration for every Antifrogen type? |
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The required minimum concentration for a sufficient corrosion protection is as follows:
- Antifrogen N: 20 v/v
- Antifrogen L: 25 % v/v
- Antifrogen KF: 50 % v/v Antifrogen KF:% 50 v / V
- Antifrogen SOL: 100 % v/v (pre-diluted) Antifrogen SOL: 100% v / v (pre-diluted)
- Protectogen: 2.0 % v/v Protectogen: 2.0% v / V
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