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blanks

Articles tagged blanks. 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
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4 articles

Gloved hand placing a vial into the autosampler of a modular HPLC system with solvent bottles on top

chromatography

Carryover between injections

Trace carryover to the needle, a weak wash, or a missing blank, and decide whether the next peak belongs to the previous sample.

8 October 2026 · 7 min read

Gloved fingers placing a silica spin column into a collection tube beside a tube rack and pipette tips

nucleic acid purification

Extraction controls and blank samples

A reagent blank and a known positive decide whether an extraction batch is interpretable. A contaminated blank stops the whole set.

8 October 2026 · 7 min read

Mass spectrometer coupled to a liquid chromatography system with sample vials in the foreground

proteomics

Keratin contamination from the bench

Skin, hair, wool and dust shed keratins that can dominate a weak proteomics sample. A blank and the keratin types separate bench contamination from tissue.

8 October 2026 · 9 min read

Gloved hand placing a vial into the autosampler of a modular HPLC system with solvent bottles on top

chromatography

Solvent quality and ghost peaks

Separate a ghost peak from a sample peak with a blank gradient, and judge water, solvent, and plastic leachables before you integrate.

8 October 2026 · 7 min read