Agar Agar Fine Powder - 100% Natural Food Grade What is Agar Powder?Agar is produced naturally from boiling particular types of carbohydrate in red algae where it forms the structural support for the cell walls. Our Agar powder is 100% Pure Food Grade which makes a great basis for making Agar Jelly for desserts or any type of nutrient Agar for growing bacteria and other microbiology studies. How to Use Agar Normal Agar Jelly. To make jelly, add approximately 15g of Agar Powder to 125ml of water; then boil the solution for 1-5 mins and leave to cool. The jelly should set within a couple of hours. Nutrient Agar Jelly (Luria Bertani Agar). To make Luria Bertani jelly, you will need 10g of Tryptone, 5g of Yeast Extract, 10g of NaCl (Salt) and 1 litre of distilled or deionized water. Dissolve the Tryptone, Salt and Yeast Extract in the water, then add 15g of Agar Powder. Now heat the solution until boiling and simmer for 1-5 mins. If you require your jelly to be completely sterile, after boiling autoclave the solution at 15psi at between 120-124C for 15 mins. The solution can then be added to a pertri dish where it will set within a couple of hours.. What are you getting You will receive Food Grade Agar Fine Powder packaged in a heavy duty reseal-able poly bag. Please see the listing picture above. Orders / Customer ServiceIf you have any queries about delivery, payment, returns or our contact details, before or after you have placed an order, please use the links at the top of this page to view the relevant page. If you would like to contact us, please Email us here or send us an eBay message and we will respond as soon as someone becomes available.