Needle assembly for introducing a carrier gas into a sample vess
Needle assembly useful in the head-space method of gas chromatog
Needle trap
Needle-based apparatus for individualizing single fibers and oth
Negative pressure gas sampling device
No purge sampler
No purge sampler
Noack-type test unit
Non-flashing downhole fluid sampler and method
Non-sparkable safety sample weight
Nonintrusive body fluid samplers and methods of using same
Nozzle apparatus for sampling and dispensing specimen
Nozzle for the continuous separation of a representative sample