Tried the cheap ultrasonic cleaner from Harbor Freight on injectors, surprised it actually worked

Picked up the 2.5L ultrasonic cleaner for around $80 last month. Ran a set of 6 injectors from a 7.3 Powerstroke through it with some Simple Green and hot water. Pulled them apart first, springs and needles out. After 20 minutes the carbon chunks were floating in the tank. Reassembled and all 6 tested within spec on the pop tester. I figured I'd need to soak them in diesel for a week after, but nope. Have any of you run multiple sets through one of these before it gives out?

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