At room temperature, ammonia (NH3) is a highly water-soluble, colorless, irritant gas with a unique pungent odor. Ammonia has a boiling point of -33Â°C and an ignition temperature of 650Â°C. Injury from ammonia most commonly is caused by inhalation, but it also may follow ingestion or direct contact with eyes or skin.
Guitar frets are thin strips of metal that are embedded in the neck of the guitar. They are raised up from the face of the fretboard in order to separate the neck into different semi-tonal intervals. This basically means that each fret indicates a different note. Frets are numbered just like the strings are. They are not, however, numbered by the metal pieces themselves but by the space in between the metal pieces. For instance, the first fret on the guitar is the space between the nut and the first metal piece. The fret wire is commonly made of a nickel/silver alloy, but stainless steel wire, although more expensive, produces longer lasting benefits.
For an acoustic guitar to work properly, it is very important that the gap between the strings and the frets (called the 'action') is set correctly.If the strings are too close, they will rattle against the metal frets when they're played and the guitar will sound horrible. If the humidity of the environment in which the guitar is stored changes at any point, it can have a noticeable effect on the setup. 2  Transport and storage times-nowadays, most acoustic guitars-particularly budget instruments-are made in the far east, mainly China, South Korea, Indonesia and Taiwan.