If you order large quantities of bottle wash detergent, you may wish to consider delivery in IBCs (Intermediate Bulk Containers) rather than drums.
This has several advantages, for example, the cost per litre is lower since you are no longer paying for all those drums. From an environmental viewpoint, you do not have to dispose of plastic containers because empty IBCs can be removed for re-use without any additional cost. The other issue, however, is how to transport the product to your bottle washer.
You may prefer to keep refilling a drum from the IBC, although a better method is to install automatic dosing. This will enable you to add the initial charge and continue to top-up throughout the day automatically. There will be fewer handling operations and this will create enhanced operator safety.
Top-up can be done using a timer or a conductivity loop, where additional product is added only when the conductivity falls below a certain level.