chromatography
Fraction collection and how to assay fractions
Decide whether a fraction is worth pooling: collect by volume or peak, then assay activity, a gel, or absorbance before you combine.
8 October 2026 · 7 min read
Knowledge centre
Methods a laboratory can check.
Guides, method explainers and sourcing notes for research laboratories. Written by the EVRINTH Editorial Team from published methods, with catalogue links for enquiry rather than stock claims.
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
520 articles
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
cell culture
Freezing cells and recovery
A glossary of cryoprotectant, slow cooling and cold storage for research cell stocks, and the recovery mistakes that waste a vial.
8 October 2026 · 8 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
Pillar · gene expression
From cells to a gene expression result
How a laboratory goes from cells to a gene expression result, and how RNA quality decides between a focused RT-qPCR assay and RNA-seq.
8 October 2026 · 7 min read
dna sequencing
From reads to a result a biologist can question
QC, trim, align, deduplicate, call, annotate, filter: the questions a biologist can still ask, and why a PDF gene list is not the data.
8 October 2026 · 8 min read
proteomics
From spectra to a biological claim
From a raw spectrum to a sentence a biologist may say: identification, a designed contrast, an orthogonal check, and the claim a cell study can actually support.
8 October 2026 · 7 min read
cold chain
Frost-free freezers and why enzymes hate them
Frost-free freezers warm on purpose to clear ice. That thaw pulse is a poor home for enzymes and antibodies that need a steady setpoint.
8 October 2026 · 9 min read
laboratory safety
Fume hoods and volatile chemicals
Sash, face opening, capture, and the test sticker are the working words of a chemical fume hood. Follow the laboratory SOP for the number.
8 October 2026 · 9 min read
laboratory safety
Gas cylinders and a secured chain
A hiss, a slack chain, or the wrong regulator are different faults. Separate oxygen, nitrogen, carbon dioxide, and hydrogen before you touch a fitting.
8 October 2026 · 8 min read
molecular cloning
Gateway and recombination cloning overview
Follow att-site recombination from an entry clone to a destination clone, and treat ccdB as a strain choice rather than a recipe.
8 October 2026 · 9 min read