Metra BCM-197 ultrasonic cleaner 48KHz 12oz 50ml solution 3 timers

Ultrasonic Jewellery Cleaner 48KHz

The Metra BCM-197 is a compact ultrasonic cleaner that operates at 48KHz with a 12oz tank capacity. It is designed for home users who want a simple way to clean jewellery, eyeglasses, watches and similar small items. A 50ml bottle of cleaning solution, a power adapter and a cleaning cloth are included in the package.

Upgrade from 46KHz single-timer models

Earlier cleaners in this range often run at 46KHz and provide only one fixed cycle. The BCM-197 adds a higher 48KHz frequency plus three digital timer settings of 180, 360 and 540 seconds, letting you match the cycle to the level of soiling. The jump is worthwhile when you regularly clean pieces that need either a quick refresh or a longer, deeper cycle.

Practical limits of 48KHz ultrasonic cleaning

The 48KHz frequency creates fine cavitation bubbles suited to delicate items, but it cannot reach the aggressive cleaning power of lower-frequency industrial units. The 12oz tank restricts the size and number of pieces you can clean at once, and the maximum 540-second cycle may be insufficient for heavily encrusted deposits. Avoid using the machine on porous or fragile materials such as pearls.