The term phosphate buffer solution is identified in base64 scheme by the sequence cGhvc3BoYXRlIGJ1ZmZlciBzb2x1dGlvbg==, while the MD5 signature is equal to 14a84eb5648af61b01fa7fc6ea8fd8c2. The ASCII encoding of phosphate buffer solution in hexadecimal notation is 70686f7370686174652062756666657220736f6c7574696f6e.