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Omni Cell | Demountable Liquid Cell

Omni Cell | Demountable Liquid Cell

The Omni-Cell is comprised of a cell body and window assembly. For a complete cell both parts must be ordered individually in the overview below (Windows & Spacers). For demountable and mull cells spacers are also usually required. If required, a single body can be used with multiple window options for a range of different applications.
  • Modular transmission cell system The cell is built up from window sets, spacers, and the cell body/backing plates. It is designed to be disassembled for cleaning and for customisation of pathlength and window materials. 
  • Choice of permanently sealed or demountable window setsDemountable windows allow for flexibility of pathlength and may be disassembled to clean difficult samples. Sealed cells ensure pathlength stability and avoid leaks. 
  • Extensive selection of materials Our range of windows cover spectral ranges from the near-IR through to THz frequencies.

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Product nr. Omni Cell | Demountable Liquid Cell

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Meer informatie over Omni Cell | Demountable Liquid Cell

Omni-Cell Body The Omni-Cell body is comprised of two aluminium backing plates with a plastic insert between. Four thumbscrews are used to align and fasten these parts together. The transmission windows are sandwiched between the backing plates, sealing against a PTFE gasket on the front plate and a neoprene gasket on the back plate. The front plate is fitted with two Luer ports with PTFE stoppers.

Window Options A range of different window materials are available, with different chemical compatibilities and physical properties (such as refractive index and spectral range) to suit your requirements. Sealed Cells offer superior pathlength repeatability for quantitative measurements, whilst demountable cells are more suitable for general purpose applications, allowing the user easy cleaning and to quickly change pathlength at will. The Mull cell was originally designed for the mull technique, now little used, but remains a good option for the analysis of highly viscous liquids and pastes that cannot be loaded in a sealed cell. Note for thin window materials (ZnSe, Silica, AgBr, Si and Polythene) require an additional spacer (supplied as standard with these windows).

MaterialTransmissionrange (cm-1)Refractive index @ 1000 cm-1Suitable forUsage notes
KBr40000—4001.53IRSoluble in water
NaCl40000—6001.49IRSoluble in water
BaF266000—8001.40IR
CaF250000—11001.31IRSlightly soluble in nitric acid. Reacts with sulphuric acid to form hydrofluoric acid!
ZnSe20000—5002.41IRNot suitable for use with acids (<pH 5.0) or strong bases (>pH 9.0)
KRS-516000—2502.37Deep IRVery Toxic – handle with care
AgBr22000—3002.17Deep IR
Fused Silica (IR grade)40000—30001.4Near-IR, visible, and UV
Polyethylene625—4~1.5Far-IR and THz

Spacers For a Sealed cell a lead spacer is permanently sealed to the windows and is selected as part of the window. For Demountable and Mull cells the spacer can be changed at will and must be ordered separately.Compatible Standards

MethodNumber 
Determination of fatty acid methyl ester (FAME) content in middle distillates. Infrared spectrometry methodEN 14078
In-Service Oil Condition Monitoring standard practiceASTM D7418
Phosphate Antiwear Additives in In-Service Petroleum and Hydrocarbon Based Lubricants by Trend AnalysisASTM D7412
Monitoring of Oxidation in In-Service Petroleum and Hydrocarbon Based LubricantsASTM D7414
Sulfate By-Products in In-Service Petroleum and Hydrocarbon Based LubricantsASTM D7415
Nitration in In-Service Petroleum and Hydrocarbon Based LubricantsASTM D7624
Standard Practice for Condition Monitoring of In-Service Lubricants by Trend Analysis Using Fourier Transform Infrared (FT-IR) SpectrometryASTM E2412


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ZnSe 0.5 mm Sealed Window Unit

ZnSe 1 mm Sealed Window Unit

ZnSe Circular Omni Cell Windows (Pair)

ZnSe Rectangular Omni Cell Windows (Pair)

ZnSe 0.2 mm Sealed Window Unit

Silica(IR) 0.05 mm Sealed Window Unit

Silica(IR) 0.1 mm Sealed Window Unit

Silica(IR) 0.2 mm Sealed Window Unit

Silicon Circular Omni Cell Windows (Pair)

Silicon Rectangular Omni Cell Windows (Pair)

ZnSe 0.025 mm Sealed Window Unit

ZnSe 0.05 mm Sealed Window Unit

PTFE 0.5 mm Rectangular Spacers (Pkt 5)

ZnSe 0.1 mm Sealed Window Unit

PTFE 0.5 mm Circular Spacers (Pkt 5)

PTFE 1.0 mm Rectangular Spacers (Pkt 5)

PTFE 1 mm Circular Spacers (Pkt 5)

Silica (IR) 0.5 mm Sealed Window Unit

Silica (IR) 1 mm Sealed Window Unit

Silica(IR) Circular Omni Cell Windows (Pair)

Silica(IR) Rectangular Omni Cell Windows(Pair)

Silica(IR) 0.025 mm Sealed Window Unit

Polyethylene Rectangular Omni Cell Windows(Pair)

PTFE 0.05 mm Rectangular Spacers (Pkt 5)

PTFE 0.05 mm Circular Spacers (Pkt 5)

PTFE 0.10 mm Rectangular Spacers (Pkt 5)

Mylar 0.012 mm Rectangular Spacers (Pkt 5)

PTFE 0.1 mm Circular Spacers (Pkt 5)

Mylar 0.025 mm Circular Spacers (Pkt 5)

PTFE 0.2 mm Rectangular Spacers (Pkt 5)


Reserveonderdelen

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Quick Release Nuts for Omni-Cell (Pkt 4)

Rear Neoprene Gaskets for Omni-Cell (Pkt 2)Liquid

Spacer for Omni-Cell Thin Windows

Luer Plugs for Omni-Cell (Pkt 2)