Test for ammonia, carbon monoxide, chlorine, hydrogen sulfide, nitrogen dioxide, and sulfur dioxide. Testing methods follow procedures of the EPA which recommends collection of the gas in a special absorbing solution and subsequent chemical analysis. Kit is suitable for testing either field levels or levels in confined areas. Packaged in a durable, waterproof carrying case and supplied with a manual. A precision pump is an essential part of an air pollution detection program. Quantitative test results require that accurately measured volumes of air be pumped through the collection chamber at prescribed rates of flow. Note: Kit does not include air pump; order LaMotte® Air Pollution Sampling Pump (item# 653055) separately. Sold only to schools and businesses.