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.

The Best Way to Save on Lab Instruments? Buy Like New or Reconditioned

When you hear the phrase “like new,” what comes to mind? In the case of Cole-Parmer, “like new” instruments are the same as brand new except these items have a cosmetic blemish that keep them from being sold as new. Because of this, they are sold at a discount—yet carry a full manufacturer’s warranty.

Cole-Parmer® Ultrasonic Cleaner (Like New)

You save on your budget while getting the equipment you need in good working order. What’s the downside? Well it doesn’t look perfect. That’s it.

“Reconditioned” items are another option to bank your budget dollars. These items are the same as the original but have been refurbished to the original manufacturer’s specifications. They are sold at a substantial discount and carry a three-month warranty.

Both options expand your possibilities when you need a gear pump, flowmeter, pressure transmitter, incubator, or other item yet have a limited amount to spend. You will also find microscopes, cabinets, pump heads, ovens, ultrasonic cleaners, and more in our selection.

What is it you need at a lower price? Check out our Steals & Deals page to see if your item is available.

The Best Way to Save on Lab Instruments? Buy Like New or Reconditioned

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