Optical spectroscopy and calorimeter instrumentation
Jasco P-2000 Polarimeter
- Digital high-precision polarimeter to determine the optical rotation of a sample
- Tungsten-Halogen lamp with filters for 589 (Na), 578, 546, 436, 405, and 365 nm
- Angular range ± 90°, resolution 0.0001°, Faraday cell modulator
- Sample cells available for sample volume of 9 mL (10 mm x 100 mm) or 1.6 mL (3.5 mm x 100 mm)
Jasco V-770 UV-Vis-NIR Spectrophotometer with integrating sphere
- Obtains the absorption, percent transmittance, or percent reflectance spectrum in the range 190-2,700 nm
- Integrating sphere attachment for measuring the diffuse transmittance or diffuse reflectance of a liquid suspension or solid sample, respectively. Wavelength range 200-2,500 nm
- Temperature control cuvette holder for the range -10° to 110°C
- The specular reflection attachment is designed to measure the specular reflectivity of a smooth surface sample relative to an aluminum-deposited plane mirror. The angle of incidence is 5° and the incident wavelength varies from 200-2,500 nm
- The film holder attachment measures the transmittance of a transparent solid sample, such as films
- Statement of acknowledgment
The Jasco V-770 UV-Vis-NIR Spectrophotometer was funded through the U.S. Army Engineer Research and Development Center. Please acknowledge the use of this instrument in your publications, presentations, and dissertations. A suggested statement can read: "This work made use of the Jasco V-770 UV-Vis-NIR Spectrophotometer that is funded by the U.S. Army Engineer Research and Development Center (W912HZ-21-2-0048)."
Malvern Panalytical Zetasizer Nano ZS
- Determines particle sizes suspended in solution in the range of 0.3 nm to 10 µm
- 4 mW 633 nm laser
- Temperature range of cuvette compartment, 0 to 90 °C
- Measurement angles 13° and 173°
MicroCal Differential Scanning Microcalorimeter
This is an analytical technique that measures the difference in the amount of heat needed to increase the temperature of the reference and a sample as a function of temperature. Microcal Differential Scanning Calorimeter (DSC) operates in the temperature range of -10 to 130 â„ƒ.
It is capable of both up-scanning and down-scanning at user-selectable scan rates. Scan rates for up- and down-scanning fall in the range of 0° to +90°/hr. and 0° to âˆ’60/hr., respectively. The sample and reference cells have effective volumes of â“0.5 ml and are immune to all acids. This method is often used to evaluate shelf life and the thermal stability of drug or other chemical formulations.