Manufacturer: Perkin Elmer. Model: Polarimeter 341. Product no.: L300-0011. Serial no.: 9837. Year of manufacture: 2008. Description:. Polarimetry is an important method for the investigation and analysis of optically active substances. The Model 341 is a universal and versatile precision polarimeter with Na and Hg lamps and Glan-Taylor polarizer. It is an extremely flexible instrument for both research applications and quality control. The device can be extended in the UV range and used for polarimetric HPLC detection. The proven optical zero principle, in which the analyzer rotates automatically, is the basis for PerkinElmer's reputation in polarimetry. In combination with the latest microprocessor electronics, the result is an instrument that combines the highest possible accuracy and precision with ease of use. For routine measurements, simply select the wavelength, insert the sample and read the result. Main applications include:. - Characterization of newly synthesized compounds. - Quality control of pharmaceuticals. - Precise quantitative analysis of sugars. - Selective detection of optically active components by HPLC. - Monitoring and control of enzymatic reactions. Features:. - UV-transparent Glan/Taylor polarizer. - Pure light from Hg and Na spectral lamps. - Multiple interfaces. - Easy operation. - Increased sensitivity at low wavelengths. - Highly accurate readings. - Flexible use as a standalone system with printer, PC system or HPLC detector. - Easy operation, quick to learn. - Simple operation, database results and method management and individual reporting. - Fully meets FDA requirements for regulated industries. Specifications:. - Model 341: Na 589 nm, Hg 578 nm, Hg 546 nm, Hg 436 nm and Hg 365 nm; four spare positions for additional optional filters. - Principle: Automatic precision polarimeter with optical zero principle by rotation of the analyzer; automatic gain control. - Radiation: Hg high pressure lamp and Na spectral lamp. - Spectral lines: Selectable via the instrument keypad. - Apertures: Selectable apertures for standard cells and microcells. - Detector: 1P28A photomultiplier. - Polarizer and analyzer: UV/Vis transparent calcite Glan-Taylor prisms. - Rotation range: ± 85°. - Compensation speed: 1. 3°/s at 50 Hz. - Accuracy: ± 0. 002° for rotations =1º; ± 0. 2% for rotations >1°. - Repeatability: Better than 0. 002° (for zero and rotation angle reading). - Internal angular resolution: 1 x 10-4 º Integration times: 0. 1s, 0. 2s, 0. 5s, 1s, 2s, 5s, 10s, 20s, 50s and 100s. - Autozero setting: Electronically from the instrument keypad at any desired position in the rotation range. - Operation: Either menu-driven via integrated touch keys (English, German, French, Spanish and Italian) or PC-controlled via POL WinLab or POL WinLab ES software. - Display: Standalone operation: Vacuum fluorescent display, two lines of 20 characters each. PC operation. - Result format: Selectable from the instrument keypad - angular rotation, specific rotation, molar rotation, international sugar scale, user-defined scale with factor and offset. - Printer Output: Standard parallel printer port (Centronics port) supports HP-PCL, Epson esc-p, and generic ASCII format. - Communication: RS-232C serial interface, selectable communication parameters. - Data Input: Input port for Intermec 9720 bar code reader and/or standard PC/AT keyboard. - Analog Output: Digital-to-analog conversion of angular rotation for connection to integrators or recorders; recording ranges ± 50°, ± 5°, ± 0. 5°, ± 0. 05°; resolution 0. 1% of span width; cyclic repeatability in all ranges; output voltage 0 to 10 mV, 100 mV, and 1 V. External Ready: Relay closure contact (normally open), signal floating; maximum load 110 V, 0. 3 A AC or 30 V, 1A DC; activated by pressure signal, selectable delay and duration. - External autozero function: External activation of the autozero function; TTL signal, low active; or normally open contact; duration at least 100 ms. - Temperature sensor: PT-100 temperature sensor for measuring cells (optional accessory); temperature range -23° C to +198° C. - Power requirements: 220-240V, 50Hz. - Dimensions (WxHxD): 825 x 310 x 390 mm. Items supplied:. - Perkin Elmer Polarimeter 341. Condition:. The polarimeter is in excellent cosmetic, technical and operational condition. It is 100% functionally tested, works as intended and is ready for use.