Laboratory Refractometer User Testimonial Ashland Chemical

A Rudolph Research Analytical testimonial from a Digital Refractometer user.

Dear Peter,   We purchased two J257 Automatic Refractometers in 2002 to support a new resin development program here in Ashland. 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…

…We would not hesitate to purchase more. In fact in our European lab in Rotterdam and in one production facility here in the US are both “scheduled” to purchase J157 units this year.



Sr. Staff Scientist
Ashland Specialty Chemical
Global Technology
Columbus, OH

Rudolph Research Analytical is a global manufacturer and supplier of  Automatic Digital Benchtop Laboratory Refractometers.

Quality • Integrity • Innovation • Global Reach.

For over fifty years Rudolph has dedicated itself to manufacturing quality instruments and providing superior technical and service support. With over 5,000 instruments installed worldwide and many still in operation after 25 years of service, Rudolph understands the demands of today’s laboratories for quality, durability, reliability and is NVLAP certified. No matter what the application, Rudolph’s complete line of density meters,  refractometerspolarimeters, saccharimeters, and accessories can meet your laboratory’s needs for accuracy, reliability and performance.