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.

5 Lab Ready Products for Pharmaceutical Research and Production

While you may be using a variety of instruments, equipment, chemicals and reagents, and consumables, in your pharmaceutical lab, here is a selection of five lab ready products for research and production:

1. Sterilized Sampling Bottle Assemblies safely transfer, sample, and store biopharmaceutical products and reagents, Assemblies are pre-sterilized by gamma irradiation, eliminating labor and validation costs associated with assembly and cleaning.

2. S ingle-Use Pressure Sensors for Pressure Monitoring and Transmitting Systems for tangential flow filtration, cross flow filtration, depth filtration, bioreactor monitoring, and chromatography. Pressure sensors are manufactured in a FDA-compliant facility, in an ISO Class 8 (formerly Class 100,000) clean room. Sensors are made from USP Class VI-compliant polycarbonate or caustic-resistant polysulfone. Both materials are gamma stable.

3. BD Disposable Sterilized Syringes come in an easy-to-open sealed package and can be autoclaved out of the package.

4. Whatman Venting Filters are manufactured under strict clean room conditions and bio safe. They are ideal for venting and isolation applications to protect vessel contents from external contaminants in biotechnology, pharmaceutical, and food and beverage industries.

5. Disposable Micro Aluminum Weigh Dishes for microbalances, organic micro elementary and thermal analysis, and pharmaceutical use. These micro weigh boats are compatible with most commercially available analyzers and microbalances.

5 Lab Ready Products for Pharmaceutical Research and Production

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