microbiology
Antibiotic stocks and outdated plates
How to retire antibiotic stocks and agar plates for cloning strains when heat, age or drying would fake a lawn or an empty plate.
8 October 2026 · 8 min read
Tag
antibiotics
Articles tagged antibiotics. 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
4 articles
cell culture
Antibiotics in medium hide poor technique
When penicillin-streptomycin in routine medium hides a contaminant, and how to choose whether a research culture should grow with or without it.
8 October 2026 · 8 min read
microbiology
Autoclaving media and antibiotic timing
An autoclave is pressurised steam, and heat-labile antibiotics go in only after the medium has cooled. This glossary separates those steps from a warm oven.
8 October 2026 · 8 min read
microbiology
Satellite colonies around a large colony
Why tiny colonies ring a large one on ampicillin, and how that halo differs from kanamycin plates poured for cloning strains.
8 October 2026 · 9 min read