Frequently Asked Questions

Hadex^® can be added to your drinking water supply manually or by automatic dosing with either a dosing unit or inline measuring equipment.

Hadex^® should be kept indoors, in a cool and dry (dark) area. If stored at temperatures below 25°C, it can be stored for up to 1.5 years without losing its effectiveness. If stored in really cool termperatures (t = < 6 °C) it will even keep for up to 3 years.

1 liter of Hadex^® can be used for 50.000 liters of drinking water, which translates into 0.5 cents per liter. In terms of disinfection, Hadex^® is therefore a much cheaper alternative for ATA or CTGB approved biocides such as peroxides, as the Hadex dosage is much lower.

Hadex^® will be slightly less effective (fotolyse) when combined with UV systems. In a UV system, dosing and energy values are relatively low, so this loss will hardly be measurable. Read more about our UV systems on the related product page.

Different scenario’s may be possible here. For example, you may be measuring incorrectly, or active coal filters may have absorbed the Hadex^® fluids in your water. Please also check the Hadex^® can you've used: has it perhaps passed its shelf date? If you're unsure, feel free to contact us with your questions, so we can help and advise you.

What may well be happening here, is that your fresh water supply was severely fouled and Hadex^® is reacting accordingly. Due to this strong action, a chlorine smell may be released which you could associate with a swimming pool scent. In this instance, it is imperative you do not adjust your Hadex^® dosage! We advise you to continue the treatment; the typical smell will decrease eventually.

However, if you suspect you may have used the wrong dosage and added too much Hadex®, then please contact us for advice.

Hadex^® should be returned within three months of the production date.  This date can be found on the label at the back of the packaging.

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A common mistake! However, Hadex^® is not a person but a Hatenboer-Water brand-name for our water disinfecting product.