What is the difference between an analytical balance and a precision balance?

An analytical balance provides readability of 0.1 mg or better, while a precision balance typically reads to 0.001 g or 0.01 g. Analytical balances include draft shields and are designed for highly sensitive measurements. Precision balances handle larger samples and are less affected by environmental conditions.

What readability do I need for my lab application?

You need a readability that is at least one-tenth of your smallest sample weight or required measurement increment. For example, measuring 100 mg samples may require 0.01 mg readability, while gram-level work may only need 0.01 g. Selecting higher readability than necessary increases cost without improving results.

Do lab balances need to be calibrated?

Yes, all lab balances require regular calibration to maintain accuracy. Calibration ensures measurements remain traceable to certified standards. Internal calibration simplifies this process by automating adjustments, while external calibration requires manual verification with certified weights. In regulated environments, calibration records must be documented and retained.

What is the difference between readability and repeatability?

Readability is the smallest increment of weight a balance will display. Repeatability is the degree of agreement between multiple measurements of the same mass, on the same balance, under the same conditions.

What is the best way to clean my balance to ensure accurate readings?

Inspect and clean before each use. A flannel cloth or soft brush works well for dusting and light cleaning. Use a non-abrasive cleaner for light spills, and a dry flannel cloth for glass parts. Set a regular maintenance schedule for deep cleaning to ensure optimal performance and instrument longevity.

Can vibration affect the accuracy of my balance?

Yes — even slight vibration from a heavy footstep can affect accuracy. Place the balance on a sturdy benchtop away from high-traffic areas such as hallways, elevators, stairways, and doors. If that placement is not possible, an anti-vibration table should be considered.

3 New Laboratory Convection Ovens for Efficiency and Economy

In pharmaceutical, chemistry, biology, forensics, and environmental labs, ovens dry and process samples, remove solvents or waters, and provide heat and stress testing. A new line of Cole-Parmer^® StableTemp^™ Laboratory Ovens offers scientists several options—from economy to digital models—to enhance their processes:

Digital Mechanical Convection Ovens quickly dry and heat samples. Save time with fast heat-up and uniform temperature throughout the chamber for greater drying efficiency. Program and control through PC, if desired.
Economy Mechanical Convection Ovens deliver forced air convection with PID temperature control. Includes auto-tuning and calibration features typically found on more expensive units. Set digital timer up to 99 hours.
Economy Gravity Convection Ovens provide gentle air flow for sterilization and drying. Two adjustable vents control air and vapor circulation. Preset up to three settings for quick recall.

Need more info? View our selection of laboratory ovens.

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3 Comments on "3 New Laboratory Convection Ovens for Efficiency and Economy"

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