3 Boxes = 36 Litres Everbuild OPTI-MIX Concentrated Mortar Plasticiser Admix.

1 litre is equivalent to 25 litres of standard product and 250ml is equivalent to 6.25 litres of standard product. Tested to BSEN934-Part 3. Everbuilds opti-mix is the genuine concentrated mortar plasticiser.

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