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…
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.