We supply in kg and not in litre. Because Carrier Oils are lighter than water, we can't fill 1kg in 1 litre bottle. So, we will fill 0.9kg in a 1 litre bottle, 4.5kg in a 5 litre bottle. However, some is available in 1kg and 5 kg bottle if it is available as supplied by the Supplier. It is indicated in brackets in the "PRODUCT" column. Most of the big drums are in 25kg, but some is supplied as 23kg drum (which will be indicated in brackets). For bigger order quantity, please contact us for better pricing.