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Analytical Instruments
Laboratory-grade pH meters and spectrophotometers for research labs — analytical accuracy, not the pool, aquarium, or soil testers of the same name.
A lab-grade pH meter differs from a consumer pool, aquarium, or soil tester in more than price: laboratory meters offer finer resolution (typically ±0.01 pH), multi-point calibration against buffer standards, and temperature compensation — details that matter for reproducible results, and that consumer testers usually skip entirely.
Spectrophotometers measure how much light a sample absorbs at a given wavelength, and are used across analytical chemistry, biochemistry, and molecular biology for everything from nucleic acid quantification to enzyme kinetics. Wavelength range and accuracy are the specs to compare across models.
Every instrument here ships with the calibration documentation and specifications a research or QC lab actually needs to validate performance on receipt.
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Frequently asked
Analytical Instruments FAQ
- What is the difference between a lab-grade pH meter and a consumer pH tester?
- Lab-grade pH meters offer finer resolution (typically ±0.01 pH versus ±0.1 or worse on consumer meters), multi-point calibration against certified buffer standards, and automatic temperature compensation. Consumer pool, aquarium, or soil testers are built for convenience and a much wider acceptable error margin.
- How often does a laboratory pH meter need calibration?
- Most labs calibrate a pH meter at the start of each day of use, or before any measurement where accuracy is critical, using at least a 2-point (ideally 3-point) buffer calibration bracketing your expected sample range.
- What is a spectrophotometer used for in a research lab?
- Spectrophotometers measure light absorbance through a sample at specific wavelengths, commonly used for nucleic acid and protein quantification, enzyme assays, and general analytical chemistry concentration measurements.
