Instruct: Classify a given Amazon review as either positive or negative.
Query: centrifuge base does not work

The base requires D batteries or a 6v adapter. it did not work when we used the batteries. It does not come with the adapter so we could not even test it to see if it what just the battery chamber that was malfunctioning. unfortunately we will have to take it back. It really doesn't deserve a 1 star as it does not work! Don't waste your money.