This combination offers the best practice for mixing liposomal vitamin C, other liposomal products, steeping and ultrasonic assisted Extraction. iSonic P4821 has a powerful industrial grade ultrasonic stack transducer which is twice more powerful and more reliable than a wafer transducer used in our small personal models but used by some brand name manufacturers in their commercial models. It has a 30-minute timer and a heater. Heater can be used for certain applications and should be left off for liposomal vitamin c mixing, steeping, etc. The 500 ml beaker holder set renders the best approach for DIY applications such as making liposomal vitamin C and other liposomal products, steeping and ultrasonic assisted extraction such as herb extraction, infusion. It offers several advantages than using in an ultrasonic cleaner directly. 1. It's much easier and safer to clean the beaker vs. The ultrasonic cleaner with electronic components inside that are susceptible to water damage. 2. The cleanness of a glass beaker. 3. It makes it much easier to control the temperature of the mix. 4. It keeps the integrity of the products away from metal (all ultrasonic cleaners use stainless steel tanks). 5. It frees up ultrasonic cleaner to do something else such jewelry, eyeglasses cleaning. It also has a degas feature to remove air bubbles. It carries one-year warranty for parts and labor for the ultrasonic cleaner, excluding the glass beaker. Customers who are within the lower 48 states pay 1-way shipping, 2-way outside. This listing is for a 110V unit for North America.