Quartz cells

 Demountable cells

Fixed optical length gas cell

      Multi-pass gas cells   

Thermostable gas cell

Diffuse reflection module

Autosampler for gasoline analysis

Near-IR module

Quartz liquid cells

Quartz cells are designed for testing liquid samples and have a fixed optical path length. They are used, in particular, to determine the mass concentration of petroleum products in water and oil in liquid ammonia by infrared absorption spectra (control area 2925 cm^-1).

The cells are made of optic quartz glass of KV grade.

Quartz cells are delivered with a cover from fluoroplastic.

The length of the optical path 1, 3, 5, 10, 20, 30, 40, 50 mm.

Demountable gas cells

Ostec offers two types of demountable gas cells:

• Thin layer cell for study liquids placed between two windows as a thin layer, determined by the brass gasket.

• The cell for study of liquid samples with weak absorption and suspensions in vaseline oil prepared from solid samples.

Gas cell with a fixed optical length

The cell is designed to determine impurities in gases with a threshold of < 1%.

Flow mode or gas filling after vacuuming

Stainless steel casing, two bellows valves

Optical length – 100 mm

Windows Ø40 mm, KBr with waterproof coating or CaF₂

Multi-pass gas cells

Multi-pass gas cell is designed for the determination of impurities in gases with a threshold of < 0.1 ppm

Optical length 0.8 – 40.56 m, step is 0.8 or 3.12 m

Window material: KBr with waterproof coating or CaF₂ 

Gas thermostatable cell

The cell has 100 mm fixed optical length and is designed to investigate gases, gas mixtures, and vapors in flow or static mode by IR transmission spectroscopy with the ability to maintain or change the temperature of the sample. 

The cell is installed in the spectrometer and connected to the source of the investigated gas samples using a gas transfer tube

Exchangeable optical windows ZnSe and KBr

The possibility of heating up to 250°C. The built-in heaters and the cell temperature sensor are controlled by the temperature controller (included in the scope of delivery) 

The material of the cell housing is stainless steel

Specular reflection modules

Specular reflection modules are designed for routine measurements of solid samples and coatings with a thickness range from nanometers to microns: for identification of coatings and determining their thickness.

Specular reflection, obtained for relatively thin films on a reflective substrate and measured for an angle of incidence close to normal, is usually highly accurate and gives spectra very similar to transmission spectra.

Features:

• reflected radiation measurement for close to normal angle of incidence,

• fixed angles of incidence – 10°, 30°, 45°, 80°

• easy to install in the device,

• no sample preparation,

• convenient sample location.

Diffuse reflection module

The module is designed to measure the diffuse reflection spectra of scattering surfaces and dispersed samples in the mid- and near-IR spectral range.

Diffuse reflection spectra of the investigated samples are measured against a suitable non-absorbing comparison sample. Measurement conditions tend to be chosen in such a way as to minimize the mirror component of the reflection. In most cases, this is achieved by mixing the test substance with a powder of an unabsorbing material such as KBr, which acts as an unabsorbing matrix. This eliminates the need for laborious sample preparation.

Advantages of the method:

• minimal or no sample preparation requirements;

• the ability to investigate highly absorbent materials;
  
• the possibility to study irregular surfaces or coatings, including polymeric ones;
  

• possibility of obtaining spectra in a wide range of concentrations of the studied substance.

Horizontal-type HATR module

Horizontal-type HATR module is designed to investigate the chemical composition of liquid media, fine nonabrasive powders, and polymer films. It allows to simplify sample preparation and can be used to express quality control of production.

HATR module successfully replaces the cuvettes and devices used for the analysis of liquid, semi-liquid, and solid substances and is suitable for both qualitative and quantitative analysis. Sample preparation is reduced to placing the sample on the prism crystal.

Features:

• Up to 7 internal reflections for maximum sensitivity
• ZnSe prism crystal as standard. Ge or Si prisms are possible. The effective thickness of the absorbing layer depending on the material and the prism parameters can be selected in the range of 1-50 µm
• High accuracy in reproducing the effective thickness of the absorbing layer
• Spectrum acquisition time at standard resolution and photometric accuracy does not exceed 1-2 min
• The clamping device allows powders and films to be pressed to the prism surface

Autosampler module for gasoline analysis

The autosampler module is designed for installation in the universal IR Fourier Spectrometer IROS P for gasoline analysis, which includes:

• Determination of benzene concentration according to GOST R 51930 (ASTM D4053, EN 238)

• Determination of oxygenate concentration in accordance with GOST R 52256 (ASTM D 5845)

The autosampler module includes a flow liquid cell. Sample taking and solvent washing of the cuvette is performed automatically by means of built-in peristaltic pump under software control. The sample volume does not exceed 10 ml.

Modules for wafer analysis

The modules are designed to control parameters of semiconductor wafers up to 200 mm in diameter in the transmission or reflection modes by a high-sensitivity non-contact method at operator-defined points.

Main measured parameters:

• concentration of interbody oxygen (plate thickness 0,4-2,0 mm) within (5×10¹⁵-2×10¹⁸)±5×10¹⁵ cm^-3 (SEMI MF1188);

• replacement carbon concentration (plate thickness 0.4-2.0 mm) within (5×10¹⁵-2×10¹⁸) ±5×10¹⁵ cm^-3 (SEMI MF1188): (10¹⁶-5×10¹⁷)±10¹⁶ cm^-3 (SEMI MF1391);

• radial oxygen inhomogeneity in silicon wafers (SEMI MF951);

• thickness of epitaxial layers of silicon structures such as n-n+ and p-p+ within (0.5-10.0)±0.1 µm, (10-200)±1% µm (SEMI MF95);

• thickness of epitaxial silicon layers in NNS structures within the range of (0.1-10.0)±1% µm;

• concentration of phosphorus in FSS layers and boron/phosphorus in BFSS layers within (1-10)±0.2% weight.

Near-IR module

The module is designed to measure the absorption spectra of samples in the near infrared region of the spectrum in the range of 4 000 – 12 500 cm^-1 with IROS P11 FTIR spectrometer.

Using near-IR field it is possible to perform identification and quantitative analysis of pharmaceuticals, products of chemical, polymer, textile, food, agricultural and other industries.

The sample is placed in a quartz cell, which is mounted in a retractable cell holder. The cell holder is fixed in three positions in the attachment to analyze the sample at three different points. This increases the measurement accuracy of heterogeneous samples.

Software features:

• self-diagnosis of the main components of the analyzer

• selection of operating parameters and measurement modes

• registration of spectral data (multiple ATR spectra) for analyzed samples

• measurement results and component concentrations displaying

• measurement protocols printing

• saving an archive of spectral data, measurement protocols and log file with self-diagnosis results

Description

Determination of interstitial oxygen in silicon (ASTM F1188), substitutional carbon in silicon (ASTM F1391), epitaxial layer thickness for silicon structures (ASTM F95), radial interstitial oxygen variation in silicon wafers (SEMI MF951), boron and/or phosphorus in BPSS/PSS, silicon epitaxial layer thickness for SOS structures

Determination of ethylene units in EPM copolymers and EPDM terpolymers (ASTM D3900), and ENB or DCPD in EPDM terpolymers (ASTM D6047)

Identification of substances and search for structural analogs of unknown compounds by their IR spectra. The database includes 25 libraries (polymers, medicines, drugs, toxic substances, dyes, toxic chemicals, plasticizers, lubricants, oil products, surfactants, adhesives, minerals, food additives, etc.) and contains a total of over 70,000 full spectra.