The Rudolph Research Standards Laboratory

The Rudolph Research Standards Lab was established after decades of manufacturing the highest quality Polarimeters, Refractometers, Density Meters and Alcohol Proof Testing Instruments. To better serve our customers, Rudolph has invested in a state of the art standards laboratory to produce highly accurate, and reliable calibration fluids. All the Rudolph Standards Laboratory fluids may be conveniently purchased online in the Rudolph online shop.

BRIX calibration Standards

Rudolph produces the highest quality BRIX calibration fluids with available BRIX values of 5% to 60%. These are available in increments of 5-10% including 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, and 60% BRIX. In addition Rudolph produces a very high BRIX standard of 67.5%.  Standards are made on a regular basis to insure you receive fluids with a minimum 30 day shelf  life. Ordering BRIX Standards is easy and can be accomplished online. Visit the Rudolph Shop for Refractometer Calibration Standards.

Refractometer RI Standards

For labs that use Refractive Index , the Rudolph Standards Lab provides RI specific reference flu. Available values at 20°C are 1.40 RI, 1.460 RI, 1.516RI, and 1.570 RI (20-60°C) See all the available Refractometer Calibration Standards.

Density Meter Fluids from the Rudolph Standards Lab

• Density Meter Water Standards are offered by Rudolph in a 10ml Ampoule. The specifications are:
• Uncertainty of Measurement: +/- 0.00003 g/mL.
• Calibrated at 15ºC, 20ºC, 25ºC; 0.9982 is the typical Density Value in g/cm3.
• Comes complete with NIST Traceable Calibration Certificate.

See the available Rudolph Density Standards.

Alcohol Reference Fluids from The Rudolph Standards Lab.

Rudolph is a leader in Alcohol Proof Testing and offer fluids to insure your instrumentation is performing at its best and for calibration. We offer both % Alcohol by v/v for pure alcohol and water reference and an obscured alcohol fluid with a defined % Alcohol v/v with a fixed obscuration value.

Polarimeter Quartz Control Plate – Calibration Standards.

Rudolph is long time leader in polarimeter design, manufacturing and calibration. The Rudolph Standards Lab provides the highest quality Quartz Control reference plates and temperature validation measurement apparatus.  You may call us to order new Quartz Control Plates or for recertification of your current QCP. Convenient online ordering is available for Quartz Control Plates.

As the Rudolph Standards Laboratory expands its capability look for additional offerings in our product range. Our Focus will remain on Polarimetry, Refractometry, Density and Alcohol.