Lab pH Meter & Spectrophotometer: Selection Guide
Two workhorses of the analytical lab
pH meters and spectrophotometers appear in nearly every testing workflow. Choosing well improves data quality and throughput.
pH meters
- Resolution — 0.1 / 0.01 / 0.001 pH depending on need.
- Temperature compensation — automatic (ATC) for reliable readings.
- Electrode — replaceable, suited to your sample (aqueous, low-ion, etc.).
Our pH meter range spans routine to higher-accuracy units (example).
Spectrophotometers
- Wavelength range — UV-Vis (190–1100 nm) for broad assays.
- Throughput — single-cuvette vs multi-well.
- Sample type — cuvette, micro-volume, or flow cells.
Our spectrophotometer range and lab testing instruments cover common configurations.
Fitting into the lab workflow
These sit alongside centrifuges, balances and IVD analyzers. For broader assay menus, see lab IVD equipment.
Procurement checklist
- Required accuracy and resolution
- Calibration and buffer support
- Wavelength range and sample format
- Throughput and connectivity
- Electrode / cuvette consumable cost
Conclusion
Specify by accuracy and assay range, then throughput. Start from the pH meter and spectrophotometer ranges, and integrate with the wider lab testing catalogue.
Frequently Asked Questions
What accuracy and calibration do I need from a pH meter?
For most labs, 0.01 pH resolution with automatic temperature compensation is sufficient. Calibrate regularly with at least two buffer points. Our pH meter range covers routine and higher-accuracy needs.
How do I choose a spectrophotometer's wavelength range?
Match the range to your assays: a UV-Vis unit (190–1100 nm) covers nucleic acid and protein work, while simpler colorimetric tests need only the visible band. Check sample throughput and cuvette vs micro-volume needs.