Phone: +1 (305) 912-8031 Email: [email protected] Address : California, USA https://www.megapillstoreonline.com 1-5L adjustable, Flow rate 1 L concentration 90% ± 2%, flow rate 2 L concentration 78% ± 2%, flow rate 3 L to 4 L concentration 50% ± 3%, flow rate 5 L concentration 30% ± 3% This unit https://www.megapillstoreonline.com/product/oyster-plus-zinc/