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.

Looking at Piston Pumps? Watch This Video

Name: Looking at Piston Pumps? Watch This Video
Uploaded: 2015-02-06T10:00:46-06:00
Channel: Cole-Parmer Blog Team
Description: If you’re seeking long term repeatability in a pump, a piston pump may be the answer. Michael Hassan, Application Specialist, from our UK office explores why he considers a piston pump a mix of a diaphragm pump and a syringe pump. Learned how valved and valveless models work—and get an objective overview of their advantages

TOPICS:piston pumps

Posted By: Cole-Parmer Blog Team February 6, 2015

If you’re seeking long term repeatability in a pump, a piston pump may be the answer. Michael Hassan, Application Specialist, from our UK office explores why he considers a piston pump a mix of a diaphragm pump and a syringe pump. Learned how valved and valveless models work—and get an objective overview of their advantages and limitations.

Learn more about piston pumps when you watch this video:

[youtube https://www.youtube.com/watch?v=f9-mD5OQQDo?feature=player_detailpage&w=640&h=360]

Looking at Piston Pumps? Watch This Video

Be the first to comment on "Looking at Piston Pumps? Watch This Video"

Leave a comment Cancel reply