Rudolph Instruments DigiPol-DP781 Series Polarimeter

The Rudolph Instruments DigiPol-DP781 Series Polarimeter is a precision optical instrument designed for high-accuracy measurement of optical rotation, specific rotation, and concentration in research, quality control, and industrial laboratory applications.
Engineered for exceptional accuracy, stability, and wavelength versatility, the DP781 model is part of Rudolph’s advanced DigiPol line of digital polarimeters, offering multi-wavelength operation, programmable measurement modes, and an integrated printer and PC interface.

Ideal for pharmaceutical, chemical, food, and optical research laboratories, the DP781 provides unmatched measurement precision down to ±0.001°, making it suitable for demanding analytical and calibration applications.

Key Features

• Multi-Wavelength Measurement – Operates across 589 nm through 577, 546, 436, 405, 365, and 325 nm, covering standard sodium D-line and multiple arc lamp wavelengths.

• Exceptional Optical Sensitivity – Measures samples with optical densities up to 3, corresponding to 0.1% sample transmission.

• Wide Rotation Range – ±90° Arc, ±230° Z (ISS), or ±230° S (ISS) selectable, suitable for diverse sample types and concentrations.

• High Accuracy – Delivers ±0.001° accuracy across the entire measurement range.

• High-Resolution Readout – Selectable 5-, 6-, or 7-digit display with resolutions of 0.01°, 0.001°, or 0.0005°.

• Long Pathlength Capability – Accepts sample cells up to 220 mm for enhanced accuracy and sensitivity.

• Sample Cell Compatibility – Works with standard 30 mm diameter cells as well as larger 48 mm diameter models from other manufacturers.

• Built-In Printer – 24-character dot matrix printer with permanent ink for durable documentation.

• User Memory – Stores up to ten programmable measurement methods for fast, repeatable testing.

• PC Connectivity – Equipped with RS232 interface for data output, supporting 9600/19200 baud rates.

• Timed Measurements – Programmable interval (0.2–60 minutes) and duration (1–6,000 minutes) for kinetic or long-term monitoring studies.

• Digital Control System – 6×4 keypad with intuitive layout and auto-zero function at power-up or during measurement.

• Robust Design – Constructed for reliability with a built-in tungsten lamp power supply (arc lamp models use external supply).

• Arc Lamp Model DP781-SDV – Features a sodium D-line at 589 nm, 450–650 nm Glan-Thompson polarizer, and manual filter change option.

Technical Specifications

Applications

The Rudolph DigiPol-DP781 Polarimeter is used in:

• Pharmaceutical Research – Determining specific rotation for chiral compounds and purity testing.

• Chemical Analysis – Quantifying optical activity in organic and inorganic materials.

• Food & Beverage Testing – Measuring sugar concentration, essential oils, and flavor compounds.

• Quality Control Laboratories – Routine optical rotation and concentration analysis with precision repeatability.

• Academic & Industrial R&D – Optical characterization of novel compounds and nanomaterials.

Advantages

• Unmatched Optical Precision – ±0.001° accuracy ensures confidence in high-value analytical results.

• Multi-Wavelength Flexibility – Adapts to diverse analytical requirements and optical standards.

• Advanced Data Handling – Built-in printer and RS232 output for record-keeping and data transfer.

• Durable Laboratory Construction – Rigid frame design and stable optics deliver long-term performance.

• Customizable Operation – Programmable modes and timed intervals support kinetic and long-duration studies.

• Trusted Rudolph Quality – Backed by over 50 years of experience in polarimetry instrumentation.

Buy Rudolph Instruments DigiPol-DP781 Series Polarimeter

HiTechTrader offers the Rudolph Instruments DigiPol-DP781 Series Polarimeter, a state-of-the-art instrument for optical rotation, specific rotation, and chiral compound analysis.
With its multi-wavelength capability, ±0.001° accuracy, and digital control interface, the DP781 delivers the precision and reliability demanded by modern analytical laboratories.

Contact HiTechTrader today for pricing, availability, or technical details.