This agar agar, supplied in powder form, is added to the bacterial medium at a concentration of 15 g per litre and provides clear culture plates for microbiology. This is a high quality agar agar for bacteriology. The point of solidification is at temperatures between 35 °C and 42 °C. This agar agar, supplied in powder form, is added to the bacterial medium at a concentration of 15 g per litre and provides clear culture plates for microbiology. This is a high quality agar agar for bacteriology. The point of solidification is at temperatures between 35 °C and 42 °C.