Wavelength range
Visible-only models cost less because they use a single tungsten lamp. Adding UV capability requires a deuterium lamp, additional optics, and automatic lamp switching - typically adding $1,000-2,000 to the base price. Only pay for UV if you actually need it.
Bandwidth specification
Tighter bandwidth (1nm vs 4nm) requires better monochromators and optical components. For routine assays, 4nm works perfectly. For sharp spectral features or regulatory requirements, 2nm or less justifies the added cost.
Beam configuration
Double-beam instruments cost more due to additional optics and beam splitters, but save time in high-throughput environments. Single-beam models cost less and work fine when you can re-blank between sample sets.
Display and interface
Basic LCD displays show essential data affordably. Touchscreens add cost but improve user experience for complex protocols. Consider whether visual graphs and touch controls actually improve your workflow.
Data handling capabilities
Built-in memory, USB connectivity, and method storage add modest cost but significant convenience. Proprietary software and LIMS connectivity from premium brands can add thousands in licensing fees.
Build quality and lifespan
Premium brands build for 15-20 year operation with corresponding prices. Budget models targeting 5-7 year lifecycles cost less. Consider whether you'll still want the same technology in 10 years.
Brand and support structure
Premium brands include the cost of global service networks and extensive validation documentation. Budget brands offer basic support and documentation suitable for most applications.
