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Item #: SH 02
Our Price: $425.00
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Description 

High precision Schmidt and Haensch polarimeter tubes with bubble trap available in 50 mm 100mm and 200mm length
The tube diameter is flared at one end. These tubes should be filled at the narrow end, and after filling and sealing they should be gently rotated so that any air bubbles present can collect in the flared end.

This comprehensive range of polarimeter tubes from Schmidt and Haensch are precision engineered from high quality laboratory grade glass or stainless steel. They have a 30 mm diameter support flange and meet the standards of ICUMSA Class A and the corresponding specifications of the OIML and the Australian Standard K157. The range includes many standard types and models for small samples, continuous measurement, and temperature controlled samples. We can also supply special tubes to meet specific requirements.

Choosing a Polarimeter Tube Generally speaking longer tubes are better than shorter tubes, because the effects of artifacts such as manufacturing tolerances, contamination from residues and sample heterogeneousness are proportionately lower in a long tube. The most common tube lengths are 100 or 200 mm.. The 400 mm tubes are for visual sugar polarimeters. When testing colored samples it is sometimes necessary to use shorter tubes to reduce light absorption. The amount of absorption varies exponentially with length while the angle of rotation is directly proportional to length. The 190.09 mm and 95.04 mm tubes are for per cent observation for diabetes urine-sugar analysis. They are designed for testing in a circle polarimeter at a wavelength of 589 nm. The unknown glucose concentration in the test solution corresponds directly to the angle of rotation with the 190.09 tube and double the angle with the 95.04 mm tube.

Length (mm) Volume cc Part No.
50 8 02604
100 10.5 02600
200 16.5 02601

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