This solvent base watch cleaner is used in the #1 container only. To obtain best results with you watch cleaning machine, rotate basket in each container 3 to 5 minutes, spin-off surplus liquid. Then revolve basket slowly in drying chamber. Avoid placing flat surfaces together. For a perfect rinse use with Astro clean Ultrasonic Instrument Rinsing Solution. Flat rate shipping $20.00 per case. Shelf Life is 1 Year.