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.

Jenway® 74 Series Spectrophotometers With Enhanced Connectivity from Cole-Parmer

Spectrophotometers with Enhanced Connectivity

The new Jenway 74 Series Visible and UV/Visible Scanning Spectrophotometers with CPLive Connectivity gives you an easier way to experience spectroscopy. Safely and securely upload and archive data to the cloud, manage multiple devices at one time with the CPLive App, share data with colleagues, and access unlimited data storage. The Jenway 74 Series spectrophotometers provide accurate and reliable results ideal for a variety of applications from teaching, to industrial applications, to routine sample analysis in quality control environments.

Additional Features

You will find these spectrophotometers easy to use with a high-definition, color touchscreen, and intuitive user interface. The touchscreen interface is fast and responsive even when wearing gloves. With these spectrophotometers, you also have 10GB of onboard storage for methods and results, multiple USB ports for data storage and printer connectivity, multi-language options, and versatility with an extensive range of optional accessories.

Three models available

Model 7410 uses a tungsten halogen lamp for measurements in the visible spectrum from 320 to 1000 nm. Model 7415 uses a press-to-read xenon lamp to extend measurements into the UV spectrum down to 198 nm. The xenon lamp has a 3-year warranty. Model 7415 Nano is a micro-volume spectrophotometer.

To learn more about the Jenway 74 Series, go to ColeParmer.com/Jenway or call our product experts at 1-800-323-4340.

Browse our complete line of spectrophotometers.

New Jenway 74 Series Spectrophotometers Feature CPLive™ Connectivity

Spectrophotometers with Enhanced Connectivity

Additional Features

Three models available

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