Refractometer Temperature Correction & Control Peter Marriott – Refractometer Product Manager Rudolph Research Analytical Also see video: Refractometer, Temperature Correction & Control with a Rudolph J457 We are going to look at the effects of changing temperature on refractive index measurement and if Temperature Correction can compensate for temperature variances or if actual temperature control
Digital Refractometers – Universal Concentration Meters By Angelo DePalma, Ph.D – Partial Reprint – Originally Published April 6th, 2011, for original see Lab Manager; – Refractometers are instruments that quantify and identify chemicals and materials based on their refractive index (RI). A unique property related to the speed of light as it passes through a substance, RI (Refractive Index)
I would highly recommend the DDM 2910 Automatic Density Meter and Rudolph Research Analytical to anyone…
The professionalism, product knowledge, and responsiveness of the entire team at Rudolph had been absolutely first rate…
The refractometer is easy to use and easy to clean. We are looking forward to many years of trouble free operation.
The lab technicians like it for its ease of use, and the lab supervisors (myself included) like it for its reproducibility from one technician to the next…
I just want to say how pleased we are with our Rudolph J157 Automatic Refractometer. We use it in the Production Lab where it is just as accurate as our standard Abbe type refractometer.
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…
Based on very satisfying results, we decided this year to replace also the backup Abbe style instrument by a second Rudolph refractometer. We are very pleased with your instruments; you can consider us as reference customer.
The J257 refractometer, which we recently purchased from Rudolph, has been a valuable addition to our laboratory. It has provided us with consistent and accurate readings for both research and production.
We purchased two J257 Automatic Refractometers …Those instruments not only supply critical data in the creation and optimization of products, but they often do so as many as seven days a week. The ability to make fast, accurate and reliable determinations of refractive index in just a matter of seconds allows us to maximize the quality of our products.
I would highly recommend the Rudolph J57HA Refractometer over any other brand of refractometer that I have used or tested throughout my many years working in the sugar industry…
…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.
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…
