---
title: "What does Controlled room temperature (CRT) mean | SSL"
description: "A controlled ambient range for products that must not overheat or freeze, commonly 15 °C to 25 °C in pharmaceutical practice, with the exact limits taken"
url: https://safeandsecure.in/answers/what-does-controlled-room-temperature-crt-mean-in-logistics/
canonical: https://safeandsecure.in/answers/what-does-controlled-room-temperature-crt-mean-in-logistics/
updated: 2026-11-11
lang: en-IN
publisher: Safe & Secure Logistics Private Limited
---

[Logistics terms](https://safeandsecure.in/answers/glossary/) · Logistics terms

# What does Controlled room temperature (CRT) mean in logistics?

Short answer

A controlled ambient range for products that must not overheat or freeze, commonly 15 °C to 25 °C in pharmaceutical practice, with the exact limits taken from the product label.

Many medicines in India are labelled "store below 25 °C" or "store below 30 °C". In Indian summers an ordinary closed truck can exceed these limits, so CRT pharma often moves in temperature-controlled vehicles. Ask our desk how this applies to your consignment.

Period: General definition. Data as of 29 Sep 2026. [How we count](https://safeandsecure.in/facts/)

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## The numbers behind this answer

**Also called**: CRT, ambient controlled

**Category**: Cold chain

**Related terms**: 2 to 8 °C, Mean kinetic temperature (MKT), Good Distribution Practices (GDP), Temperature excursion

## Sources

1. [SSL logistics glossary](https://safeandsecure.in/glossary/#crt)

Period: General definition. Data as of 29 Sep 2026.

## Related questions

- [What does 2 to 8 °C mean in logistics?](https://safeandsecure.in/answers/what-does-2-to-8-c-mean-in-logistics/)
- [What does Good Distribution Practices (GDP) mean in logistics?](https://safeandsecure.in/answers/what-does-good-distribution-practices-gdp-mean-in-logistics/)
- [What does Mean kinetic temperature (MKT) mean in logistics?](https://safeandsecure.in/answers/what-does-mean-kinetic-temperature-mkt-mean-in-logistics/)
- [What does Chilled mean in logistics?](https://safeandsecure.in/answers/what-does-chilled-mean-in-logistics/)
- [What does Temperature excursion mean in logistics?](https://safeandsecure.in/answers/what-does-temperature-excursion-mean-in-logistics/)
- [What does Temperature data logger mean in logistics?](https://safeandsecure.in/answers/what-does-temperature-data-logger-mean-in-logistics/)

## On this site

- [Logistics glossary](https://safeandsecure.in/glossary/#crt)
- [Controlled room temperature (CRT): related page](https://safeandsecure.in/tools/cold-chain-temperature-guide/)

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---

Source: https://safeandsecure.in/answers/what-does-controlled-room-temperature-crt-mean-in-logistics/ (the HTML page is the record; this markdown twin was generated from it on 2026-11-11). Publisher: Safe & Secure Logistics Private Limited, https://safeandsecure.in/. Figures and their periods: https://safeandsecure.in/facts/