People. Progressive. Principled

ICH Stability Testing Services

Offering stability storage for all key ICH climatic zones. Our available conditions and storage solutions are suitable for long term, intermediate, accelerated, photo-stability, in-use and FUST stability trials.

Stability testing is a key component of the chemical, manufacturing and control (CMC) section of the Common Technical Document. Its purpose is to provide data and information as to how the quality of active pharmaceutical ingredients (API), investigational medicinal products (IMP) and finished pharmaceutical products are maintained with the passage of time. Continuity of the originally manufactured quality is key to assuring both patient safety and determining the shelf life of the aforementioned types of pharmaceutical preparation.

The ICH guidelines provides recommendations on stability testing protocols specifically temperature, humidity and duration for climatic Zone I and II, III and IV in order to minimise the different storage conditions for submission of a global dossier. At Tepnel we have developed over 25 years of stability testing experience across the full range of formulation types for both large and small molecules.

ICH stability zones

ZoneType of Climate
IIIHot dry
IVHot humid/tropical
IVbASEAN testing conditions hot/high humidity

Long term testing requirements

ZoneTemperatureHumidityMinimum Durations
I21ºC ± 2ºC40% RH ± 5% RH12 Months
II25ºC ± 2ºC60% RH ± 5% RH12 Months
III30ºC ± 2ºC35% RH ± 5% RH12 Months
IV30ºC ± 2ºC65% RH ± 5% RH12 Months
IVb30ºC ± 2ºC75% RH ± 5% RH12 Months
Refrigerated5ºC ± 3ºCNo humidity12 Months
Frozen-15ºC ± 5ºCNo humidity12 Months


Accelerated and intermediate testing conditions

ZoneTemperatureHumidityMinimum Durations
Accelerated ambient40ºC ± 2ºC70% RH ± 5% RH6 Months
Accelerated refrigerated25ºC ± 2ºC60% RH ± 5% RH6 Months
Accelerated frozen5ºC ± 3ºCNo humidity6 Months
Intermediate30ºC ± 2ºC65% RH ± 5% RH6 Months


Our GMP compliant facilities in Livingston, Scotland contain stability storage capacity and conditions which are continuously monitored, mapped, annually qualified and validated to ensure ongoing compliance and traceability to national standards. Coupled with an extensive set of analytical testing laboratories including full on site pharmaceutical microbiology support, we specialise in oral dosage units, inhalation formulations and vaccine formulations.

Tepnel is a named Quality Control Analytical Laboratory on multiple product licenses in both the EEA and US.

Our ICH stability testing services include:


Sections in cGMP Analytical Services

All cGMP Analytical Services

Additional Resources

Download pdfVideo

Get in touch

Your Name

Your company (required)

Your Email (required)

Your Message

This form collects your name, Company name and email address and we may use these details in the future to contact you regarding our products and services. Please read our privacy policy for full details on how we protect and manage your data.

I consent to Tepnel Pharma Services collecting my details and contacting me regarding its products and services.