A highly perfumed, heavy duty toilet blue, liquid additive.This formaldehyde-free product has the consistency of a syrup, contains a non-staining blue / black dye and is supplied as a strong Berry fragrance. Cumberland Blue is perfect for sites like glamping and construction areas, where regular toilet use demands longer periods between servicing.

Suggested dosing levels:

• DOSING LARGE WASTE TANKS:
  When a high water content is anticipated (e.g. for glamping sites or building sites with regular toilet flushing involving a 6 litre water cistern flush) use 5 litres of Cumberland Blue per 2000 litre tank capacity is ideal. You may top up with a further 5 litres during use, if necessary.
  
  When high waste concentrations are experienced, 10 litres of Cumberland Blue per 2000 litre tank capacity is more suitable You may top up with a further 5 litres during use if necessary.
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• DOSING SMALL TOILET WASTE TANKS:
  To extend the cleaning periods of small recirculating flush tanks (although not advisable) when the toilet unit may not be used for several weeks, for example:
  dose the toilet with 20 litres of fresh water and add 500ml of Cumberland Blue. Top up with extra Cumberland Blue as required.