Chapter 1, Basic Operation
Operation Manual
GEMINI Twin-Port Sampler
1-1
Chapter 1
Basic Operation
Introduction
Congratulations on your purchase of the GEMINI Twin-Port
Sampler, an instrument designed for low flow industrial
hygiene 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.
Description
The GEMINI Sampler is designed to measure concentrations of
gases and vapors when used with Zefon or other manufacturer’s
Sorbent Tubes. It is compatible with any personal sampling pump
capable 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 small
Sorbent Tubes
• Tube Protector for larger Sorbent Tubes
• Tubing (1/8” ID for connection to GEMINI Sampler,
connected by a fitting to 1/4” ID)
