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.

4 Reasons to Use Heating Torches

TOPICS:heating torches

Posted By: Cole-Parmer Blog Team May 8, 2015

Heating torches can do more than solder metals; they perform heat sealing in a variety of manufacturing, construction, and jewelry-making applications. The microtorch is especially handy, with a pinpoint flame that is adjustable for wider targets.

Four ways to use heating torches include:

Heat shrink tubing and specialty connectors
Spot dry
Heat wax
Work with laboratory glassware and glass tubing

To do their job, these torches have flame temperatures that reach as high as 2500°F (1300°C). You can select table-top models for laboratory and industrial uses or the convenient handheld portable models for field and other applications. Soldering pens are also available.

View our selection of heating torches.

4 Reasons to Use Heating Torches

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