Why might a sample pan fail during analysis?

No one likes a failed run. Yet, disposable pans sometimes fail, even if they look new and clean.

A sample pan may fail due to overheating, cracks, improper sealing, or using the wrong material or size for the test conditions.

 

Key Causes of Sample Pan Failure

Problem	Description	Prevention Method	More Info
Overheating	Exposing the pan to temperatures beyond its rated capacity causes warping or melting.	Always check the melting point of the material.	Thermal Analysis Details
Material mismatch	Using a pan material not suitable for the sample or method can trigger reactions.	Match sample’s chemistry with proper pan type.	Pan Materials
Improper sealing	Pans not sealed well let volatile components escape or introduce air.	Use the right sealer and follow sealing instructions precisely.	Sealing Research
Physical damage	Dent or crack from handling leads to leaks or breakage.	Check each pan visually before use.	Visual Inspection

Often, I take a moment to inspect each pan. I also make sure not to exceed the melting point of aluminum or other materials when setting up heating programs.

 

How can I prevent contamination of samples in disposable pans?

Even a small source of contamination can ruin results. This happens easily if we skip steps in handling or cleaning.

To avoid contamination, always use clean gloves, tools, and work in a dust-free area. Store pans in closed containers until use and handle samples carefully.

 

Steps to Prevent Sample Contamination

Step	Action	Reason	Reference
Glove Use	Wear clean, powder-free gloves every time.	Protects against skin oil and particles.	Laboratory Gloves
Clean Tools	Wipe tweezers and spatulas before each use.	Removes residues from last use.	Tweezers Info
Pan Storage	Keep pans in the original closed box or sealed bag.	Minimizes dust and airborne particles.	Consumables Storage
Static Avoidance	Avoid handling pans near plastics that create static.	Prevents dust attraction and fine particle transfer.	Static Electricity

I discovered that most contamination issues trace back to my hands or dusty benches. Now, I always store fresh pans in enclosed boxes and handle them with gloves to improve reliability.

 

What steps should be taken if a pan does not fit properly in the equipment?

Improper fit wastes time and can cause failed runs. Sometimes, the smallest difference in diameter or rim shape can prevent smooth loading.

If a pan will not fit, stop and compare the pan dimensions to your equipment's specifications. Only use pans verified for your analyzer model.

 

Checklist for Addressing Pan Fit Issues

Step	Action	Purpose	Guide Link
Verify Pan Code	Check lot and model number on packaging.	Ensures correct product for equipment.	Part Number Guide
Compare Dimensions	Measure the pan and compare to analyzer tray diameter and depth.	Catches size mismatches early.	Measuring Tools
Inspect Holder	Check equipment holder for debris or damage.	Prevents foreign matter from blocking fit.	Inspection Tips
Confirm Compatibility	Visit pan supplier and instrument brand data sheets for model compatibility.	Assures safe and precise fit.	Lab Equipment

I once received a new batch of pans that seemed just a bit too wide. Measuring with calipers quickly showed the difference. Always measure, not guess, before loading your sample.

 

How can damaged sample pans affect the test results?

Lab work depends on reliable outcomes. Damaged pans will always put this at risk, even if the damage seems minor.

Dents, cracks, or warping in sample pans result in leaks, poor sealing, and errors in thermal analysis data.

 

Impact of Damaged Pans on Test Results

Type of Damage	Effect on Testing	How to Detect	Reference Source
Dented Rim	Improper seal leads to gas escape or oxidation.	Visual check before loading sample.	Mechanical Seal
Crack in Body	Sample loss, equipment contamination, and false mass loss readings.	Inspect under strong light for hairline cracks.	Types of Cracks
Base Warping	Poor contact with heater or sensor, impacting heat flow accuracy.	Place on flat surface to check wobble.	Level Tools
Loose Fitting Lid	Loss of pressure, non-uniform heating, volatile loss.	Gently press with tweezers and listen for movement.	Tweezers Guide

But once, I missed a small dent in a pan rim, which led to a leaky seal and unexpected results. Now, I use a simple seal check before every run to make sure all pans are perfect for use.