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# Agar Ag15 (3mm Film, with Plasticizer)

![](/files/et9EkTq7B1vk66MUJ2Yy)

Ingredients: 

* Water (60 mL)
* Agar agar powder (2.5 g)
* Glycerol (3.5)

Procedure:

* Mix all the ingredients into a pan or pot
* Heat up all the ingredients to 85-90 C on the stove
* Mix thoroughly
* Lower heat if bubbles are forming on the bottom of the pan
* Take off heat after about 4 minutes of stirring or until the agar is fully dissolved (the solution is at least 85 C and thicker than when started)
* Let dry for a few days on silicone or something similar. I used an 11.5 X 16.5 silicone mat. When poured onto my mat, it naturally reached all four corners and was about 3mm thick, though you might need to manipulate it. 
* Done!

Properties:

* Before drying: very viscous and brown 
* After drying: thick and less strong than Ag12

Notes:

* Same recipe as Ag12 with the same ingredient ratio because I'm trying to find the best casting thickness.
* Interestingly, at least from just holding the bioplastic in my hand, it seems to be thicker than Ag12. This wouldn't make sense though because of the above statement.
* Also, oddly, it seems to be much more translucent than Ag11. You can barely see through it. I wonder why this is, and I wish I had taken a greater number of notes so I could have studied it.
* Very weak compared to the Ag12
* Elastic