Sentinel 357 Ultrasonic Cleaner is a concentrated biodegradable cleaner designed to work within all ultrasonic equipment. Our Sentinel 357 offers a proprietary surfactant formula providing superior wetting and non-inertial cavitation properties with very low dynamic surface tension. Having excellent foaming properties Sentinel 357 will lift and float soil and residue away from substrates. Use Sentinel 357 within ultrasonic cleaning systems or soak tanks to clean heavy soils, soot, greases, oils and odors. Sentinel 357 is safe and non-corrosive to common metal substrates while contain no butyl’s or phosphates. Sentinel 357 has an undiluted pH of 10.5 – 11.75.