THE NEAR INFRARED RESEARCH CORPORATION
Near Infrared Analysis Chemometrics Instrumentation Custom Software Custom Hardware
HIGH-PRESSURE FLOW CELL
The flow-through high-pressure cell (Patent #5,949,536) allows transmission spectra of samples at pressures up to 5,000 psi. The cell is optimized for SFC or high-pressure process measurements because of its' windowless design that combines high optical throughput with a small internal volume and small overall size. Sapphire optics allow spectral measurements in the UV, Visible, NIR and partway into the mid-IR regions. The cell is easily disassembled for inspection or cleaning, and equally easily reassembled.
CELL CHARACTERISTIC: ADVANTAGES
Monolithic construction, no windows: No leaks at windows seals.
High optical throughput for good signal/noise.
Low parts count: Easily disassembled for cleaning
Optical path length cannot change: no quantitation error.
Sapphire optics: Use in UV, visible, near-IR, mid-IR (to 5.5 micron).
Hard, Strong, Inert: Not scratched or damaged by harsh mechanical or chemical conditions.
High pressure capability No change to sample conditionsSmall sample chamber:
Maximize sensitivity to small samples. Rapid flushing of sample chamber minimizes mixing/carryover.
Tubing enters into block: defines sample chamber.
No dead volume to cause mixing or carryover of separated analytes.
Small size: Can fit into available space.
Materials contacting sample: type 316 SS, sapphire, Teflon
Overall dimensions: 3/4" dia x 1.25" length
Sample chamber volume: 4 microliters
Pressure rating: 5,000 psi
Temperature range: to 200 degrees Celsius
Type 316 stainless steel (supplied)
I.D.: 0.005"- 0.020"
Effective sample pathlength: 1.2 mm
Maximum convergence angle of beam at cell: f:1
HIGH PRESSURE CELL