The Portable Gas Diluter uses ambient air as the dilution gas and was designed for field use, with dilution ranges of 200:1. The Portable Gas Diluter must be manually adjusted to a desired concentration. The BASS-100™ Gas Diluter has a seamless interface with the Ellvin™ software, so it can automatically generate data for a calibration. The BASS-100™ requires a dilution gas and sample gas supply. It can provide a dilution range of 500:1.