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.

Repairing Tools? How to Choose Adhesives and Epoxies

TOPICS:epoxies

Adhesives and expoxies — Epoxy and Urethane Adhesive Tool Box Kit Assortment

Posted By: Cole-Parmer Blog Team April 17, 2015

If you need to repair electrical components, tools, auto parts, furniture, or machinery, polyurethane adhesives and epoxies are versatile enough to tackle your most challenging tasks. Quick-setting adhesives and epoxies help you do more in less time.

Epoxy and Urethane Adhesive Tool Box Kit Assortment

To choose an appropriate adhesive or epoxy for your project, consider the following variables:

The materials you are bonding together
The strength of the adhesive
Curing time
Temperature
How to apply the adhesive or epoxy

Still not sure what you need? Call our product application specialists at 1-800-323-4340.

2 Comments on "Repairing Tools? How to Choose Adhesives and Epoxies"

Lou | February 8, 2017 at 4:47 pm | Reply

I dropped my Craftsman battery powered drill/driver and cracked the case. What is the appropriate glue to use on the plastic case? I tried the new DAP RapidFuse Adhesive but that didn’t hold.

Thanks
- Karen Danko | March 3, 2017 at 1:15 pm | Reply
  
  Sorry to hear about your drill. We will get your information over to our techncial support team to see if someone can help you.

2 Comments on "Repairing Tools? How to Choose Adhesives and Epoxies"

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