It depends. The amount of desiccant required is usually dependent on the following factors: volume of air space to be desiccated; nature of the material to be protected; moisture surrounding the package; type of desiccant to be used; length of time for protection
Ready-Made and Ready-to-Eat. In the year 1905, Richard Hellman sold the first known ready-made mayonnaise. This was sold at Hellmanâs New York deli. And it may be inferred that mayonnaise became more available to people who were developing a taste for the product. The recipe that was used was actually made by Hellmanâs wife, and was initially sold in open wooden boats. In 1912, Hellman thought of selling mayonnaise in large glass bottles. It was easier to sell and was then marketed at a large rate. This product was then called as âHellmanâs Blue Ribbon Mayonnaise.â. It received instant popularity, and is still popular today since Best Foods now owns the rights of this product.
The first known artificial refrigeration was demonstrated by William Cullen at the University of Glasgow in 1748. However, he did not use his discovery for any practical purpose. In 1805, an American inventor, Oliver Evans, designed the first refrigeration machine.