Polarimetry – Optical Rotation vs. Specific Rotation – What’s the Difference? By Angelo DePalma, PHD Polarimetry using Polarimeters measure the degree of rotation of polarized light as it passes through an optically active material. Polarimetry was discovered by Étienne-Louis Malus, a French engineer who was studying reflective glass. Several years later another Frenchman, Jean-Baptiste Biot,
Source Video: Polarimeter Measurement Procedures to Determine Optical Rotation / Specific Rotation Video Transcript from the Rudolph Research Video Library This video covers how to fill cells and make a (Optical Rotation and Specific Rotation) measurements using a Rudolph polarimeter equipped with the exclusive and patented Temptrol heating and cooling system. Although this demonstration was
Cleaning a Polarimeter Sample Cell – Video Transcript Video location: Polarimeter Sample Cell Cleaning Procedures This video gives a brief overview of the proper method of cleaning a Rudolph polarimeter cell. This video is relevant to; 40T Temptrol polarimeter cell supplied with the Autopol IV-T, V, V plus and VI – 40T Polarimeter cell is
Please be informed that we are using the J357 Refractometer and the Autopol V since 2006, and that we are pleased about their accurate and stable measurement…
Incorporating this system into our laboratory has been like adding another employee. It saves time while ensuring accurate results, and is extremely user-friendly. In addition, I’ve found that Rudolph Research Analytical goes the extra mile to ensure their customer is satisfied with their product and their service. I would highly recommend this equipment and this company to any lab as busy as ours…
…I have been extremely pleased with the Autopol (Polarimeter) instruments over the years…As expected, our refurbished Autopol II has been reliable and easy to use. I should add that your personal visit to help us set up the instrument was very helpful and illustrated to me that Rudolph Research stands behind its products.
Overall, the instrument has been trouble-free and easy to use. Combined with the excellent costumer service provided to me by Rudolph Research on every occasion I have contacted them, I highly recommend the instrument…
We had a (Other Brand) before too, and have changed to Rudolph Autopol IV for about a year. We are pleased with the Rudolph Autopol IV ….
…we have been extremely pleased with the performance of this instrument, in terms of sensitivity and reproducibility. The instrument is very robust, and the stainless steel jacketed cells are truly a bonus, unlike the old glass cells, these are very user friendly and forgiving, especially when handled by clumsy graduate students!
We like the Rudolph polarimeters—they are very robust…our School of Pharmacy has fully converted to Rudolph, based on specifications, price, and support.
…after evaluating various polarimeters from well-known manufacturers, we ended buying one from Rudolph Research…This letter is to confirm that we are very pleased doing business with your company.
I have used numerous polarimeters and this is by far the best. We have had it for 1 ½ years and have had zero problems; the original lamp is still in the instrument. I recommend it over other instruments…we have had no problems. It is one piece of equipment that you never worry about.”
Overall, the instrument has been trouble free, exceptionally stable and accurate, as well as easy to use…I highly recommend the instrument.
The Autopol V (Polarimeter) has performed very well throughout the entire five years…. We are very happy with our Autopol and would recommend one to any lab considering a purchase of an automated polarimeter…