This is that level of clean that's almost mythical. Like your lola's white sofa that no one is allowed to sit on, or the state of your room for the 5 minutes after a major general cleaning before chaos reigns again. It's often used in a religious context (Immaculate Conception), but can also describe a perfectly white shirt or a flawless reputation. "Wow, **imakulada** ang pagkakaplantsa ng uniform mo!"