Blackwell Products Sodium metabisulfite is commonly used to precipitate dissolved gold out of aqua regia and gold chloride solutions. When it is dissolved into water, sulfur dioxide gas is created which is excellent at precipitating gold from the solution.
Sodium metabisulfite is a popular choice in this process because it is more selective in precipitating gold by itself.
In the process of gold extraction from scrap computer electronics parts, Sodium Metabisulfite is usually used along with Urea.
Urea, also called carbamide, is soluble in water and alcohol and is non-combustible. In gold recovery processes, it is used as a neutralizer of excess nitric acid in aqua regia solutions.
Attention: During the National lockdown, we made sure that our store is open, to make we still able to supply with essential items, but please note that due to supply chain challenges and high demand in chemicals and medical equipment, we may face delays in processing some orders. We are doing the best we can, and we appreciate your patience and support.
1. General Information
All orders are subject to product availability. If an item is not in stock at the time you place your order, we will notify you and refund you the total amount of your order, using the original method of payment.
2. Delivery Location
Items offered on our website are only available for delivery to physical addresses. Any shipments outside of South Africa are not available at this time.
3. Delivery Time
Estimated delivery time will be provided to you once your order is placed. Delivery times are estimates and commence from the date of shipping, rather than the date of order. Delivery times are to be used as a guide only and are subject to the acceptance and approval of your order.
Unless there are exceptional circumstances, we make every effort to fulfill your order within a or 1 business day of the date of your order. Business day means Monday to Friday, except holidays.
Please note we do not ship on weekends.
Date of delivery may vary due to carrier shipping practices, delivery location, the method of delivery, and the items ordered. Products may also be delivered in separate shipments.