photostability chamber

Photostability Chamber – The Key to Reliable Light Stability Testing

In pharmaceutical research and manufacturing, quality control is not just a process—it’s a responsibility. Every tablet, capsule, cream, or injectable that reaches a patient must remain safe and effective until its expiry date. One factor that can affect a product’s stability is light.

Certain drugs degrade when exposed to ultraviolet (UV) or visible light. This can change their chemical structure, reduce potency, or even create harmful by-products. To prevent such risks, companies perform photostability testing—and for that, they need a Photostability Chamber.

At Science Udyog, we manufacture high-precision Drug Photostability Chambers designed for pharmaceutical companies, research laboratories, and other industries that require reliable light stability testing.

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A Photostability Chamber is a controlled environment that simulates the effect of natural daylight on a product. It uses specific light sources—UV and fluorescent lamps—to expose samples to consistent levels of light over a set period.

The aim is to see how a product reacts to light exposure. Will its colour fade? Will its chemical composition change? Will its packaging still protect it effectively?

By answering these questions, photostability testing helps companies ensure their products are stable throughout their intended shelf life.

In the pharmaceutical industry, even a slight change in a drug’s composition can lead to serious consequences. Regulatory bodies like the International Council for Harmonisation (ICH) require companies to perform photostability tests according to strict guidelines (ICH Q1B).

If these tests are skipped or done incorrectly, the risks include:

Loss of potency – The drug may no longer deliver the intended therapeutic effect.
Chemical degradation – Light exposure can cause breakdown into inactive or harmful compounds.
Appearance changes – Discoloration or texture changes can make products unappealing or raise quality concerns.
Regulatory non-compliance – Products can be rejected during quality audits or banned from certain markets.
Costly recalls – If instability is found after launch, withdrawing products damages both finances and brand reputation.

By using a Stability Chamber for Drug Testing, companies can detect these problems early and take corrective action before a product reaches the market.

Although different manufacturers use slightly different designs, the working principle is the same:

Sample Preparation – Products are placed in the chamber, often in their final packaging or in clear containers, depending on the test requirements.
Controlled Light Exposure – The chamber uses a combination of UV and visible light sources that match ICH Q1B standards for intensity and spectrum.
Temperature and Humidity Control – Environmental conditions are regulated to remove other variables that could affect results.
Timed Testing – Exposure continues for a specific duration, calculated to represent a certain period of real-world daylight exposure.
Observation and Analysis – After testing, products are examined for changes in appearance, potency, or chemical structure.

This controlled approach ensures that results are consistent, repeatable, and meaningful.

Technical Overview

Specification	Details
Light Sources	UV Lamps + Fluorescent Lamps
Temperature Range	10°C to 60°C
Humidity Range	40% to 75% RH
Compliance Standard	ICH Q1B

Science Udyog’s Approach to Photostability Chambers

At Science Udyog, we understand that accuracy and reliability in stability testing come from a combination of good engineering, quality materials, and adherence to standards. Our Drug Photostability Chambers are built with the following considerations in mind:

Compliance with ICH Q1B – Every chamber meets the light, temperature, and humidity requirements set by the International Council for Harmonisation.
Uniform Light Distribution – Calibrated lamp placement ensures every sample gets the same exposure.
Stable Environmental Control – Advanced sensors maintain precise temperature and humidity levels.
Durable Construction – Stainless steel interiors resist corrosion, are easy to clean, and maintain hygiene.
User-Friendly Operation – Digital controls make it simple to set, monitor, and record test parameters.
Energy Efficiency – Modern lighting and control systems reduce power consumption.

Why Choosing the Right Manufacturer Matters

A photostability chamber is a long-term investment. Poorly built units can give unreliable results, cause repeated maintenance costs, or even fail regulatory inspections. Choosing a manufacturer with industry experience ensures:

Correct understanding of ICH Q1B and other relevant guidelines.
Use of durable, easy-to-maintain materials.
Engineering that prevents hot spots, light leaks, or humidity swings.
Support for calibration, repair, and upgrades over the product’s lifespan.

Science Udyog has been serving pharmaceutical and research industries with stability testing solutions that combine engineering precision, compliance, and usability. This focus has earned us trust across the sector.

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About, The Author

Mr. Puneet is the founder of Science Udyog, a specialized manufacturer of mortuary and biomedical equipment based in Ambala Cantt, Haryana. Since launching the company in April 2013, Puneet has delivered over 1,000+ units including dead body freezer boxes, mortuary chambers, cadaver tanks, and laboratory instruments to hospitals, forensic labs, and research institutions across India.

With 12+ years of hands-on industry experience, Puneet combines engineering expertise with real-world insights to build durable, regulatory-compliant solutions for critical healthcare needs. His leadership has positioned Science Udyog as a trusted name in the biomedical manufacturing sector.

While pharmaceuticals are the main industry for photostability testing, other sectors also benefit:

Pharmaceutical Companies – Testing final drug formulations and packaging.
Cosmetics Industry – Checking the stability of creams, lotions, and fragrances under light.
Food and Beverage Industry – Studying how light affects packaged goods like oils, juices, and snacks.
Chemical Industry – Analysing light sensitivity of specialty chemicals and coatings.

Based on size, mobility, and application, chambers can be:

Benchtop Models – Compact units for smaller labs or pilot studies.
Floor-Standing Models – Larger capacity for high-volume testing.
Custom-Built Chambers – Designed for specific light spectra, larger packaging, or unique environmental needs.
Portable Photostability Chambers – For on-site testing or mobile labs.

At Science Udyog, we offer flexibility in design to match the user’s workflow and budget.

Even the best-built equipment needs care to maintain performance. For photostability chambers, good practices include:

Regular Lamp Replacement – Light output decreases over time; replacing lamps on schedule ensures consistent exposure.
Sensor Calibration – Temperature, humidity, and light sensors should be calibrated periodically.
Cleaning – Dust and residues can block light or interfere with airflow.
Monitoring Logs – Keeping detailed records helps track performance and spot issues early.

We recommend a preventive maintenance schedule to avoid unexpected downtime during critical testing.

Conclusion

Photostability testing is a vital part of ensuring that pharmaceuticals, cosmetics, and other light-sensitive products remain safe and effective throughout their intended life. The right Photostability Chamber allows companies to simulate years of light exposure in a controlled, repeatable way—producing data that regulators accept and that scientists can rely on.

A poorly executed test can lead to false conclusions, regulatory trouble, and costly delays. But with a well-engineered, ICH Q1B-compliant chamber from a trusted manufacturer like Science Udyog, those risks are significantly reduced.

In a world where product quality directly affects patient safety and brand reputation, investing in the right testing equipment is not an option—it’s a necessity.

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See What Our Happy Customers Say

We needed a good mortuary chamber for emergencies. Science Udyog gave us fast delivery and set it up properly. It’s working well till now.

Our old tank was leaking. The cadaver tank from Science Udyog is strong and well-built. It fits perfectly in our lab.

During COVID, we needed a 6-body freezer quickly. They delivered it within 3 days. Really helpful service.

The mortuary cabinet they made for us fits exactly. It works smoothly and looks neat. We’re happy with the quality.

We use their dead body freezer box daily. It’s reliable, safe, and keeps the body well preserved.

Our students use their dissection table every day. It’s easy to clean and very strong. Good design.

The electric cremation machine we got from them works great. Less smoke, more control, and easy to use.

We had very little space. Their small-size mortuary cabinet was the perfect solution. Very neat work.

We needed a tank that follows medical rules. Puneet ji explained everything clearly and helped us choose the right one.

Frequently Asked Questions

1. What is the purpose of a Photostability Chamber?

A Photostability Chamber is used to test how drugs, cosmetics, or chemicals react when exposed to UV and visible light. It helps determine whether a product remains stable, effective, and safe throughout its shelf life.

2. Why is photostability testing important for pharmaceuticals?

Photostability testing ensures that medicines do not lose potency, change color, or form harmful by-products when exposed to light. It is a regulatory requirement under ICH Q1B guidelines for drug approval.

3. How does a Photostability Test Chamber work?

The chamber exposes samples to controlled UV and visible light while maintaining stable temperature and humidity. After testing, products are analyzed for changes in appearance, chemical structure, or strength.

4. What industries use Photostability Chambers?

While widely used in the pharmaceutical industry, photostability chambers are also important in cosmetics, food and beverage, and specialty chemical industries where light sensitivity affects product stability.

5. What makes Science Udyog a trusted Photostability Chamber manufacturer?

Science Udyog manufactures Drug Photostability Chambers that comply with ICH Q1B standards, ensuring reliable and accurate results. Our chambers feature uniform light distribution, precise environmental control, durable construction, and user-friendly operation.

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photostability chamber

Photostability Chamber – The Key to Reliable Light Stability Testing