We have two specially designed Air Compressors available for use with Sherwood Scientifics Flame Photometers; the Model 851 and the Model 855. The Model 855 Air Compressor has a water cooled trap for operation in humid atmospheres. Both compressors provide a dedicated, clean, dry air supply which is vital to achieve stable flame conditions and constant sample delivery; essential for ensuring good precision of results. The correct part number has to be specified when ordering an Air Compressor to ensure compatibility with local electrical operating voltages.