Hellma 178.765-OS Compact Absorption Flow-Through Cell with 2 M6 x 1 Screw Connectors (without Tubes), Special Optical Glass 320-2500 nm, 18 ul, 10 mm Path Length, 8.5 mm Centre Height, 1/Pk - 178-765-10-20

Absorption Cells

Hellma 178.765-OS Compact Absorption Flow-Through Cell with 2 M6 x 1 Screw Connectors (without Tubes), Special Optical Glass 320-2500 nm, 18 ul, 10 mm Path Length, 8.5 mm Centre Height, 1/Pk

Tube Dimensions: outside diameter Ø 1.9 mm, inside diameter Ø 1.1 mm, 500 mm long

Product Number: 178-765-10-20

Hellma Analytics produces a wide range of cuvettes for use in spectroscopy and cytometry with optical path lengths spanning 0.01 mm to 100 mm and above. Thanks to their stability, maximum precision and reliability when used for absorbance and fluorescence measurements, Hellma cuvettes work exceptionally well in a wide range of areas in the lab. With a surface flatness of 1 μm, our quartz windows set a benchmark in cuvette production.

What’s more, the function-optimized design with beveled edges and corners protects against the risk of damage caused by splitting and assists users in their daily work. On request, we are able to produce custom models designed for specific areas of application.

OS - Special Optical Glass - for the visible range - 320 nm – 2500 nm

OS indicates that “Special Optical Glass” is used for the window. This crown glass, specifically developed for Hellma, is made from exceptionally pure raw materials and gives improved transmission in the near ultraviolet range. An empty cell will give a transmission of more than    80 % over a spectral range from 320 nm to 2500 nm.

Measuring of cuvette transmission

If required, cuvettes can be spectrally calibrated into sets with equal transmission values (measurement uncertainty
±1%). These cuvettes are given a three-digit calibration code containing coded data about the material and the transmission at a wavelength typical for the cuvette material.

Polarimetric checking of cuvettes

Cuvettes with an inside width greater than 5 mm can be polarimetrically checked on request. They are marked with a “P” and delivered with a test certificate confirming that the rotation of the polarization plane does not exceed
0.01 degrees.

ADVANTAGES

• Extremely high parallelism of the windows with a maximum tolerance of ± 0.01 mm
• Exceptional optical path length accuracy down to 0.003 mm (3 μm) for high dimensional accuracy and reproducible measurements results
• Unique surface flatness of the optical windows of 0.001 mm (1 μm)
• Very high temperature stability and chemical resistance due to thermal bonding of individual components (effectively monolithic)
• Guaranteed transmission of at least 82% from 200 nm to 3500 nm depending on the material

Specifications:

Many sizes and types of cells are available... please contact our Sales Team with your requirements or browse the online catalogue below.

• Hellma Absorption Cuvettes
• Hellma Fluorescence Cuvettes
• Hellma Cuvettes for Special Applications
• Hellma CELLect Range Cuvettes
• Hellma UV/Vis Calibration Standards
• Hellma Certified Optical Reference Materials
• Hellma Optical Probes and Measuring Cells
• Hellma Quartz Microplates & Accessories