PETER- Happy Holidays!! I hope all is well with you. I just wanted to get back with you about our J157 HT refractometer that we purchased from Rudolph. I want to let you know that everyone here in Cedar Rapids seems to have a favorable opinion of the automatic refractometer. The lab technicians like it […]

Dear Peter, I just want to say how pleased we are with our Rudolph J 157 Automatic Refractometer. We use it in the Production Lab where it is just as accurate as our standard abbe type refractometers. It is preferred over the Abbes because you can put a sample on, then walk away and do […]

Dear Peter, I am writing to express what a benefit the Rudolph Research Autopol IV and J257 Refractometer, used in conjunction with the Anton Paar Density Meter and sample changer, has been to our laboratory. We purchased this equipment in July 2001 when it was becoming to keep up with the analytical needs of our […]

Peter, As discussed during your visit on Friday, 14.10.11, we herewith send you a statement about the use of your refractometers at our production-facility. LONZA produces a special prepolymer in a dedicated plant at the Visp site, where the refractive index (at 110°C) is used as a control of the polyme rization-rate and as stop-signal […]

Dear Peter, 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. Thus far we have not encountered any problems and I feel confident we have purchased a dependable instrument. Because we are growing […]