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 conditions

Small 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.

SPECIFICATIONS

Mechanical:

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

 

 

Connecting tubing:

Type 316 stainless steel (supplied)

O.D.: 1/16"

I.D.: 0.005"- 0.020"

Optical/spectroscopic:

Effective sample pathlength: 1.2 mm

Maximum convergence angle of beam at cell: f:1

 

 

HIGH PRESSURE CELL