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Optical components made of glass, quartz glass or calcium fluoride − they are an essential key component for facilities, instruments and machinery and thus ensure best possible results in various applications. Since 1922, Hellma has developed one-of-a-kind products and solutions, and is first class all over the world for well-known manufacturer in industry, technology and research.

 The following table gives an overview of the used materials and the respective suitable wavelength range.

Material Materialcode Wavelength Range
Optical Glass OG 360 nm - 2500 nm
Optical Special Glass BF 330 nm - 3500 nm
Boroflat® OS 320 nm - 2500 nm
HOQ 310H UV 260 nm - 2500 nm
Quartzglass Suprasil® QS 200 nm - 2500 nm
Quartzglass Suprasil® QX 200 nm - 2500 nm

Here you can find more information about Hellma cells.

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Cells for Fluorescence Spectroscopy

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  1. Hellma

    Micro Cell 108.002F-QS LP 10x2mm, VOL 500µl

    SKU: HL108002F-10-40
  2. Hellma

    Sealable Cell 117.000F-QS, 10x10 mm light path

    SKU: HL117100F-10-40
  3. Hellma

    Micro Cell 101.015-QS LP 3x3mm, VOL 130µl

    SKU: HL101-015-40
  4. Hellma

    101.171-QG, 20x20 mm, Version 1

    SKU: HL101-171-44
  5. Hellma

    101.172-QG, 20x40 mm, Version 1

    SKU: HL101-172-44
  6. Hellma

    111R-QS, 10x10 mm

    SKU: HL111R-10-40
  7. Hellma

    Semi-Micro Cell 114F-QS LP 10x4mm light path

    SKU: HL114F-10-40
  8. Hellma

    Sealable Cell 117.004F-QS, 10x4 mm, light path

    SKU: HL117104F-10-40
  9. Agilent Technologies

    25 X 4mm KBR WINDOW

    SKU: AGPIKE-160-1133
  10. Hellma

    104F-QS, 10x4 mm, K, 2 pcs.

    SKU: HL104F-10-K-40
  11. Agilent Technologies

    KBR window, 25 x 4mm, 6 pcs.

    SKU: AGPIKE-160-1009
  12. Agilent Technologies

    KBR, 32x3 mm, undrilled, 6 pcs.

    SKU: AGPIKE-160-1010
  13. Agilent Technologies

    KBR, 32x3 mm, drilled, 6 pcs.

    SKU: AGPIKE-160-1015
  14. Agilent Technologies

    32 x 3mm KRS-5, drilled

    SKU: AGPIKE-160-1125
  15. Agilent Technologies

    KRS-5 32x3mm, undrilled

    SKU: AGPIKE-160-1126
  16. Agilent Technologies

    25 x 4 mm krs-5 wndw

    SKU: AGPIKE-160-1127
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Producing informations for cells from Hellma:

Ultrasonic Machinig:

Many cell typed, especially flow-trough cells, require borings and cavities with highly complex shapes. With ultrasonic machining, which resembles the spark erosion procedure used in metall working, Hellma possesses a technology that allows to produce high-precision borings and cavities of 0,5 nm to 60 nm in the brittle glass material. The tools required for manufacturing borings of almost any imaginable cross-sectional shape are made in Hellma´s own machine-too, department.

Fusion Technology:

the process of direct fusion, which was developed by Hellma, and is almost always used nowadays ideally fulfills these requirements. However, it also presupposes that the surfaces to be fused together are polished and possess a flatness tolerance of less than 1 µm. Since no adhesives whatsoever are employed for fusing the glass parts, the seams display the same high resistance against chemicals and increased temperatures as the solid glass itself. Sinter glass fusing is only used in the few exceptional cases where direct fusion is impossible for technical manufacturing reasons.

Antireflection Coating:

When radiation passes through the cell, part of it is reflected by the exterior surfaces. The transmission is reduced by this reflected portion by approximately 8%. Vacuum evaporation of thin layers of a suitable material can reduce these reflections, thereby giving a higher transmission for the cell.
The standard is a multilayer antireflection coating that reduces reflection over a broad spectral range. Over a spectral range of between 440 nm and 650 nm the reduced reflectance is at most 0,4%. This coating is highly adhesive and resistant to both abrasion and climatic influences.

Mirror Coating:

For some purposes (e.g. fluorescence measurements) mirror coated cells are used. Both the rear window to the incident light and the left adjacent window are mirror-coated on the outside. The standard mirror coating consists of a layer of vacuum-evaporated aluminium that has a degree of reflection of mor than 80% over a spectral range between 250 nm and 2500 nm. This coating is covered with a protective layer which is extremly hard and durable. Additionally, the mirror coated window are protected against external scratches by a layer of black lacquer.
On request we can also supply metal coatings with different reflective properties and with the coated surfaces in other positions.

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