The strange noises made by the laboratory apparatus were created by uncredited Sound Editor Mary Habberfield, and produced for the soundtrack with a tuba and a bassoon.
Sir Alec Guinness performed the stunt of climbing down the side of the mansion. He was convinced by a technician, that the piano wire holding him up would not break, since only piano wire with kinks in it would be prone to breaking. As he got to about four feet from the ground, the wire did in fact break.
The sounds of Stratton's experiment (described on the record label as "guggle glub guggle") were set to music by Jack Parnell and released on Parlophone R 3435 as "The White Suit Samba" with words by T.E.B. Clarke.