Dr. Hanas Nasopure Double Pack contains 2 Refill Kits, 1-8 oz & 1-4 oz Nasopure patented BPA free bottles & detailed instructions. Each packet weighs 3.75 gm, and contains pharmaceutical grade sodium chloride & sodium bicarbonate. Each salt packet makes 4 oz of buffered hypertonic solution or 8 oz of isotonic (milder) solution. This kit makes a total of 320 oz of hypertonic solution or 640 oz of milder solution. NO OTHER ADDITIVES, PERFUMES OR INGREDIENTS.