cold chain
Comparing storage temperatures for nucleic acids
DNA often tolerates minus 20 better than RNA. Compare fridge, minus 20, and minus 80 against the kit and the sample SOP.
8 October 2026 · 8 min read
Tag
samples
Articles tagged samples. Tags group methods across clusters so a technique can be found from more than one route.
All topicsBuffers and laboratory water26Cell culture26Chromatography26Cold chain and sample storage26Cytometry and microscopy26DNA sequencing26Gels and blotting26Gene expression26Genome editing26Immunoassays26Laboratory labware26Laboratory safety26Liquid handling26Microbiology26Molecular cloning26Nucleic acid purification26PCR and amplification26Protein biochemistry26Proteomics26Research sourcing and study design26
cold chainbiosafetycrisprspecificationsequencingproteomicsenquiryglossarytroubleshootingcloningmicrobiologybuffersfreezerspipettingcalibrationelisacell cultureglassware
10 articles
cold chain
Cryovials in liquid nitrogen and the explosion risk
A leaking cryovial can fill with liquid nitrogen and burst on warming. Compare that immersion risk with vapour-phase storage before you specify tubes.
8 October 2026 · 9 min read
cold chain
Freeze-thaw cycles and aliquots
Freeze-thaw damage comes from ice, concentrated solutes, and interfaces. Aliquots cut cycles. No single cycle count fits every sample.
8 October 2026 · 9 min read
cold chain
Freezer maps and the box you cannot find
A freezer map records rack, box, and position so you can retrieve a sample without a long search with the door open.
8 October 2026 · 9 min read
cold chain
Fridge minus-20 and minus-80 storage are different tools
A fridge, a minus-20 freezer, and a minus-80 freezer slow different damage. Put each reagent in the class its own document names.
8 October 2026 · 9 min read
cold chain
Inventory so a sample is not stored twice under two names
One sample needs one identity. Two names for one tube make a cohort look twice as large, or make the tube impossible to find.
8 October 2026 · 8 min read
cold chain
Planning aliquots before the first experiment
Before the first thaw, choose the one-use volume, the freeze-thaw count you will accept, the tube class, and the label.
8 October 2026 · 9 min read
cold chain
Receiving a warm parcel
A warm parcel stays out of inventory until you have named the shipper, the coolant, any excursion, and the chain of custody.
8 October 2026 · 10 min read
Pillar · cold chain
Storing biological samples from fridge to freezer
Fridge, minus-20, minus-80 and nitrogen storage slow different kinds of damage. A warm box is a quarantine decision, not a hope.
8 October 2026 · 11 min read
cold chain
Troubleshooting a thawed freezer box
Ice and a label tell you only part of a warm box. Quarantine first, then use the product document and the assay control.
8 October 2026 · 10 min read