The Double-beam UV-Vis spectrophotometer offers excellent performance, data compliance, and intuitive operability​

The UV-1900i Plus is a high-performance double-beam UV-Vis spectrophotometer with Shimadzu’s LO-RAY-LIGH™ diffraction grating technology. It offers 1 nm resolution, low stray light and noise, and ultra-fast scanning at 29,000 nm/min. The user-friendly multi-language interface supports various measurement modes, including photometric, spectrum, quantitation, kinetics, time-course, and bio-methods. It ensures high-accuracy quantitative analysis, detects low-concentration components, and complies with Pharmacopeia standards (JP, USP, EP).With low stray light levels and high reproducibility, the UV-1900i Plus is ideal for accurate analysis of both low and high concentrations. It supports network connectivity for remote data checks (with additional memory) and can operate as a stand-alone unit with a color touch panel or via PC using LabSolutions UV-Vis software. Enhanced by a new CPU, it offers faster response speeds, efficient analysis, and integrated data management.

Key features:

• Highest resolution in its class
  • In addition to achieving a resolution of 1 nm, the highest in its class, by using a monochromator with a Czerny-Turner mounting, the UV-1900i Plus also features a compact, bright optical system. 
• Easy-to-use interface:
  • Large, clear icons make for an intuitive user experience
  • A new CPU means fast response time
  • Choose from eight display languages
• Choose from six measurement modes:
  • Photometric: Measures the photometric value at a single wavelength or multiple (up to eight) wavelengths.
  • Spectrum: Measures a sample spectrum using wavelength scanning.
  • Quantitation: Generates a calibration curve from the measurement of standards, and then caculates the concentrations of unknowns.
  • Kinetics: Measures absorbance changes as a function of time and obrains the enzymatic activity values. The kinetics measurement method or the rate measurement method can be selected. 
  • Time Course: Measures changes over time in photometric values at a specified wavelength.
  • Biomethod: Quantifies DNA or protein concentrations.
• Convenient Functions for Everyday Measurement:
  • Assist Function: Guides users through the correct measurement procedures and alerts them to missing or incorrect corrections.
  • Shutdown and Wakeup Functions: Automatically puts the instrument into sleep mode to reduce energy consumption by over 85%, and wakes it at a scheduled time so it is ready to use.
  • Startup Validation: Automatically checks instrument performance at startup for reliable results.
  • Network Connectivity: Transfers data to a PC over a network and supports wireless printing from multiple instruments to one printer.
  • Barcode Reader and Keyboard Entry: Makes entering sample names and values faster and helps prevent sample mix-ups and data entry errors.
• High performance to meet diverse needs:
  • Ultra-fast scanning - Spectra can be acquired as fast as 29,000 nm/min.
  • Low stray light - UV-1900i Plus is equipped with Low Stray Light Diffraction Gratings, achieve “best-in-class” low stray light. Stray light is at 0.5 % max. (198 nm), making accurate measurements possible at 1 Abs or more, even in the ultraviolet region.  
• High reproducibility & repeatiability accuracy:
  • The photometric repeatability accuracy is 0.0002 Abs max. (0.5 Abs and 1.0 Abs). As a result, variance in the measurement results is suppressed, enabling more accurate quantitation and the detection of low-concentration samples.
• Calidation functions complaint with JP, USP and EP:
  • This instrument can not only run checks for nine JIS items, but also those stipulated in the Japanese Pharmacopoeia (JP), United States Pharmacopeia (USP), and the European Pharmacopoeia (EP). The UV-1900 series also complies with the hardware specifications required by each Pharmacopoeia.
  • Check conditions and results can be saved, meaning they can be performed again easily by pulling them up as needed.
• Sustainable Design and Energy Efficiency
  The Shimadzu UV-1900i Plus features recycled materials and optimised packaging to reduce resource use and environmental impact. Automated startup and performance validation save time and labour, while its Shutdown/Wakeup function reduces energy consumption by over 85% in sleep mode compared with normal operation.