The Short-Term Exposure Limit (STEL) for ammonia is 35 parts per million (ppm) measured over a 15-minute period. This limit is intended to protect workers from harmful exposure concentrations in the workplace over short durations.
99.95%(pure ammonia) or better is Refridgeration grade ammonia.
Ammonia is a gas - it can't be "straight".
Ammonia is a noun.
Anhydrous ammonia is pure ammonia. Under normal conditions it is a gas, but it is usually stored as a liquid under pressure. Aqueous ammonia is ammonia dissolved in water. Household ammonia is a 3% solution of aqueous ammonia.
It is regular old ammonia -- NH3. "Ammonia-D" is a trademarked name for ammonia in Windex.
Stel was created in 1962.
Gary Stel was born in 1955.
Stel Pavlou is 6' 4".
Stel Pavlou was born on November 22, 1970.
Stel Pavlou was born on November 22, 1970.
Adriaan van der Stel died in 1646.
Simon van der Stel died in 1712.
Simon van der Stel was born in 1639.
Joost van der Stel goes by Juice Meister.
Joy van der Stel was born on October 27, 1975.
Willem Adriaan van der Stel was born in 1664.
people are dumb