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Frequently Asked Questions
Why treat the chemical as the specification?
Because it is what does the work.
The pump and tank only deliver it.
The treatment is in the container.
So the product matters more.
Than the equipment around it.
Which question comes first?
Whether it is approved for potable use.
In the market it will be used in.
Approval is product-specific.
Not a property of the chemical name.
And it is not negotiable.
Can I use a heating-circuit grade?
No, and it is a serious error.
Not a saving.
The same chemical name.
Does not mean the same approval.
Or the same impurity limits.
Does changing supplier matter?
The dose rate may no longer be right.
Concentration varies between products.
So the pump setting has to be rechecked.
Otherwise you over or under-dose.
And neither announces itself.
Does the chemical affect the pump?
Considerably - it is a common failure.
Diaphragms, seals and tubing.
Are specified for particular chemistries.
A chemical the pump was not built for.
Destroys it early and quietly.
Do these chemicals have a shelf life?
Some have a short one.
Sodium hypochlorite loses strength steadily.
And faster when stored warm.
So a big drum bought for economy.
Can be weaker than its label.
How does that show up?
As residual falling for no clear reason.
Which gets blamed on the pump.
Or on the analyser.
Check the chemical's age and storage.
Before suspecting the equipment.