Why should I cool my samples and what is the best way to cool samples?

Modified on: Fri, 6 Jan, 2023 at 12:56 PM


In most regions, sample temperature at the time of receipt at a testing laboratory is defined under local, regional or federal regulation or guidelines.  Keeping samples cool is another measure, along with appropriate preservation, collection and transportation, to maintain sample integrity and the abundance of target compounds present at the time of sampling.


In some cases dramatic changes in sample temperature can greatly affect sample composition.  Sample temperatures are recorded at the time of receipt and included on your report.


Once at the laboratory, samples are stored in strictly controlled environments at temperatures appropriate to each type of analysis.


What is the best way to cool my samples?

Cold packs do not have enough cooling power to cool your samples to <10⁰C inside a cooler, instead, use bagged ice!  Samples shipped between Bureau Veritas testing facilities are packaged using this method.


Optimal temperature during transport is 4°C but the acceptable range for most sample types is less than 10°C (and above 0°C).  Ice cubes keep samples colder and are more effective than ice packs.  It is recommended to double bag ice cubes to avoid cooler leakage and potential cross contamination. 


Ice packs are somewhat effective for samples being submitted on the same day that they are collected, cubed raw ice is much more effective.  In warmer months, additional ice may be required.







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