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Spectroscopic Instruments
FTIR-7600 FTIR Spectrometer
LIIR-100 Dual-Beam IR Spectrophotometer
LEOI-100 Experiment CCD Spectrometer
LEOI-101 Modular Spectrometer
LEOI-104 CCD Grating Spectrograph
LEOI-105 CCD Prism Spectrograph
LEOI-92 f100 Monochromator
LEOI-94 f300 Monochromator
Cuvettes and Cuvette Holders
 
 
Schematic Diagram
LS: Light source S: Sample
R: Reference G: Grating
F: Filter D: Detector
M1, M3, M5, M6, M7: Plane mirror
M10, M11, M13, M14: Plane mirror
M2, M4, M9, M12, M15: Spherical mirror
M8: Chopper
 
Transmittance spectrum of Polystyrene
 
LIIR-100

Dual-Beam Infrared Spectrophotometer

 
 
 
Features
High quality thermocouple
Low stray light
High accuracy measurement
Simple structure with easy operation
 
Introduction

Infrared spectroscopy is one of the most powerful techniques for identifying organic substances in organic and analytical chemistry. Infrared analysis can be both qualitative and quantitative. LIIR-100 is an important tool in analytical laboratories.


LIIR-100 Dual-Beam Infrared Spectrophotometer can be used to record the IR absorption and reflectance spectra of substances in the spectral range of 4000 ~ 400 cm-1. It is a powerful tool to analyze sample structures in the fields such as petroleum, chemical engineering, pharmacy, public health and environmental protection.

 

The Windows application software provides a user-friendly interface for the control of the spectrophotometer, data acquisition, and spectral analysis with functions listed below:

 

● Spectral background baseline memory
● Spectral background baseline correction
● Spectral data smoothing operation
● Spectral baseline slope correction
● Spectral data differential operation
● Spectral data arithmetic operation
● Spectral data accumulating operation
● Conversion of %T and Abs
● Spectrum file management
● Spectral peak search
● Spectrum scale extension
● Spectral absorption expansion

 
Specifications

Wavenumber Range

4000 - 400 cm-1

Wavenumber Accuracy

± 4 cm-1 (4000 ~ 2000 cm-1), ± 2 cm-1 (2000 ~ 400 cm-1)

Resolution

1.5 cm-1 at 1000 cm-1

Transmittance Accuracy

± 0.2%T (noise level not included)

I0 Line Flatness and Straightness

± 2%T

Stray Light

≤ 0.5%T (4000~ 650 cm-1), ≤ 1%T (650~ 400 cm-1)

Abscissa Extension

×0.5, ×1, ×2, ×5 and ×10

Ordinate Extension

×0.25 to ×50

Measurement Mode

Transmittance, absorbance and single beam

Scanning Speed

5 selections (a few minutes to 20 minutes for a scan of full range)

Slit Width

5 settings (very wide, wide, medium, narrow and very narrow)

Response Time

5 scales (very fast, fast, medium, slow and very slow )

Scanning Mode

3 modes: continuous, repeated and specified wavelength

Electric Power

110-220 V AC, 50-60 Hz

 
Parts List
Description

Qty

LIIR-100 Dual-Beam Infrared Spectrophotometer

1

Software CD

1

Files

User' s Guide

1

Acceptance Certificate

1

Packing List

1

Accessories

Polystyrene Film

1

Power Cord

1

Junction Cable

1

Fuse  3 A, 5×30

3

Tools

Crossed Screwdriver (150×5 mm)

1

Flat Screwdriver (75×5 mm)

1

Internal Hexagonal Wrench (2 mm)

1

Internal Hexagonal Wrench (3 mm)

1

Internal Hexagonal Wrench (1.5 mm)

1

 
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