Description
ST9
For ducts smaller than 0.6 m use sampling tube length 0.6 m.
For ducts between 0.6 and 1.3 m use sampling tube length 1.5 m.
For ducts over 1.4 m use sampling tube length 2.8 m.
ST2 Sampling tube 0.6 meter for UG-5 and UG-7
ST5 Sampling tube 1.5 meter for UG-5 and UG-7
ST9 Sampling tube 2.8 meter for UG-5 and UG-7
