The item for sale is 1 Fluid Ounce of Stannous Chloride Test Solution. This solution is ready to use and pre-calibrated to test for Gold, Platinum, and Palladium. Each ingredient has been precisely weighed, measured, and mixed for consistently accurate results. A solid gram of Tin bullion keeps this solution potent while simultaneously maintaining an ideal quantitative concentration. The dropper bottle dispenses an even drop size of approximately 650 drops per ounce. STURDY PLASTIC BOTTLE: Our bottles are made of durable Polypropylene Plastic, which is a natural, translucent, lightweight, durable, and chemically resistant copolymer. The screw-top is completely leakproof. The bottles' round shape makes them a perfect addition to any shelf or travel kit. Every bottle we ship is sealed in plastic with the screw-top shrink-wrapped. SHIPS FAST FROM CALIFORNIA, USA: We ship three times a day, seven days a week. This item will be in the mail the same day you place your order. By itself, this item will ship in a padded bubble-mailer (2-5 day transit time). Combined orders exceeding 13 ounces will be upgraded to a flat-rate box (1-3 day transit time) at no additional charge. Please make sure your stated shipping address is correct, complete, and unambiguous. Applicable products are packaged and shipped in accordance with carrier regulations for ORM-D classification.