RAININ is dedicated to the development, manufacture, and distribution of the world's most advanced pipetting products and services. Types Ecommerce -B2B (Business-to-Business) Rainin Instrument, LLC 7500 Edgewater Drive, P.O. Box 2160, Oakland, CA 94621-0060 Tel: 510-564-1600. Fax: 510-564-1617 Ordering: 800-472-4646. Rainin Instrument, LLC Rainin Road, Box 4026, Woburn, MA 01888-4026 Tel: 781-935-3050. Fax: 510-564-1617 Ordering: 800-472-4646