ISO standards download ISO 20836:2021 pdf download – Microbiology of the food chain — Polymerase chain reaction (PCR) for the detection of microorganisms — Thermal performance testing of thermal cyclers ISO 20836:2021 pdf download - Microbiology of the food chain — Polymerase chain reaction (PCR) for the detection of microorganisms — Thermal performance testing of thermal cyclers. 2 Normative references The following documents are referred to in... 02-13 Download Now