The Carbohydrate Fermentation test uses Phenol Red Broth to test for the fermentation of different sugars. It is one of the fermentation tests, others include the Methyl Red test and the Voges-Proskauer test.
The main reason why we use hexadecimal numbers is because it is much easier to express binary number representations in hex than it is in any other base number system. Computers do not actually work in hex (donât laugh, beginning students do ask that question). Lets look at an example, using a byte.
Techopedia explains Hexadecimal. Hexadecimals are used heavily in computer science and digital electronics as a means of representing binary code as a human-readable form. A single hexadecimal digit represents four binary bits called a nibble, which is half of an octet (8 bits).