Cost per litre of ready-to-use solution
Concentrate is not what you use; the diluted solution is. Where Lactaz publishes a ratio, the price per litre of concentrate is divided by the number of parts that ratio makes. That is all this is — a division. It is not a claim that one grade goes further than another, and it says nothing about how well anything cleans.
The arithmetic
price per litre of concentrate ÷ (ratio + 1 part concentrate) = price per litre of solution
A ratio published as a range produces a range of costs, shown as a band. The looser end of the range makes more solution and costs less per litre; the tighter end costs more. Neither end is presented alone.
Industrial Descaler
1:6 – 1:7range figure
Dilute 1:7 or 1:6 with water, depending on the product.
Industrial Descaler
1:6 – 1:7range figure
Dilute 1:7 or 1:6 with water, depending on the product.
Industrial Descaler
1:6 – 1:7range figure
Dilute 1:7 or 1:6 with water, depending on the product.
Industrial Descaler
1:6 – 1:7range figure
Dilute 1:7 or 1:6 with water, depending on the product.
No calculation offered
These grades have no published dilution ratio, so there is no cost per litre of solution to compute. Nothing is estimated from a sibling grade, and no ratio is read out of a set of volumes.
Kits, bundles and the skin-care range are sold ready to use and are not diluted at all.