Chapter 1, Basic Operation Operation ManualGEMINI Twin-Port Sampler 1-1Chapter 1Basic OperationIntroductionCongratulations on your purchase of the GEMINI Twin-PortSampler, an instrument designed for low flow industrialhygiene sampling and backed by years of Zefon qualty,dedication, and service.Please read the “Operation Instructions” and “Helpful Hiits”portions of this manual before using the Sampler.DescriptionThe GEMINI Sampler is designed to measure concentrations ofgases and vapors when used with Zefon or other manufacturer’sSorbent Tubes. It is compatible with any personal sampling pumpcapable of 1.5 LPM flow rate at a load of 25” of water column(w.c.). See FIGURES 1-1 and 1-2.Contents of Kit (See FIGURE 1-3)• GEMINI Sampler with Tube Protector for smallSorbent Tubes• Tube Protector for larger Sorbent Tubes• Tubing (1/8” ID for connection to GEMINI Sampler,connected by a fitting to 1/4” ID)