🤖 robot for the chemical industry

Robot in the lab: How a cobot protects chemists and ensures 100% dosing accuracy

Introduction: The Two Faces of the Chemical Industry

The chemical industry stands on two pillars: absolute safety and perfect precision. On the one hand, there are explosion-risk operations (ATEX) or the handling of aggressive acids and caustics, where human life is at risk. On the other, there are quality control (QC) laboratories, where every sample must be weighed and pipetted with microgram accuracy.

In both cases, the human factor is a problem. A person is exposed to dangerous fumes in a fume hood. His hand gets tired and shakes after the hundred and fifth sample. And what is most expensive? The time of a highly qualified chemist or laboratory technician who, instead of analyzing data, spends his shift monotonously dripping and carrying test tubes.

Main part: Problems in the fume hood and in the laboratory

1. Dangerous and monotonous work
Anyone who has worked in a lab knows this:

• Working in a fume hood: The operator must be bent over, with their hands in an enclosed space to protect themselves from fumes. It is uncomfortable and unergonomic.
• RSI (Repetitive Strain Injury): Pipetting (pressing a plunger) all day long is a direct route to carpal tunnel syndrome.
• Handling risks: Spillage of caustics, handling of toxic substances or biological samples. Every contact is a risk.

2. The requirement for superhuman precision
There is no "approximately" in quality control (QC).

• Dosage error: A person "drips" 0.1 ml too much. The entire sample is destroyed, the analysis must be repeated.
• Inconsistency: Two lab technicians prepare the same sample slightly differently. The analysis results cannot be compared.
• Overnight processes: Many chemical reactions or tests (e.g. chromatography) run for 16 hours. The lab is shut down overnight because no one is preparing additional samples.

How a robot takes on both risk and routine

Robotic automation in chemistry is not just about strength, it is about sensitivity and resilience. While giant ATEX robots service reactors in hazardous areas, the collaborative robot (cobot) has become the perfect assistant in the laboratory.

How does it work in practice?

• Robot in the fume hood: The small, flexible arm of the cobot is mounted directly inside the fume hood. The chemist is safe in the office. Meanwhile, the robot accurately weighs samples, adds solvents, and mixes solutions.
• Precise dosing and pipetting: The robot is equipped with a special gripper that holds an automatic pipette or dosing needle. Its repeatability is often ±0.02 mm. This means that it will go to the same place every time and dispense exactly the same amount. Human error is eliminated.
• 24/7 operation: The cobot uploads samples to analyzers (chromatographs, spectrometers) all night long. In the morning, the chemist has complete data from 3 times the number of samples on his desk.
• Tube handling: The robot carries racks of tubes, places them in a centrifuge, shakes them, or scans them with a barcode scanner. It does the most monotonous work.

Benefits? Security and data

• 100% safety: The operator is completely separated from hazardous fumes and chemicals.
• Perfect repeatability: Every sample is prepared identically. The resulting data is much more reliable and of higher quality.
• Capacity release: Your expensive specialist (chemist) can analyze data and develop new procedures instead of doing work that a machine can handle.
• Chemical resistance: Robots for these operations have a higher IP rating (IP65/IP67), which protects them against spray and dust. They can be equipped with special covers (sleeves) and grippers made of resistant materials (stainless steel, PEEK).

Recommended solutions for laboratories and QC

For laboratory applications, two parameters are key: high accuracy (repeatability) and small dimensions.

• Dobot CR3: With a repeatable accuracy of ±0.02 mm, this is one of the most precise cobots on the market. It is perfect for micropipetting or small sample placement.
• Universal Robots UR3e: Small, light and extremely flexible. With infinite rotation at the last joint, it is ideal for mixing, screwing caps or operating analyzers.
• OnRobot RG2 / RG6: Sensitive grippers that can grip a fragile test tube or vial without crushing it. The jaws can be made of chemically resistant materials.

Frequently Asked Questions about Robots in Chemistry (FAQ)

1. Can a robot work in an explosive atmosphere (ATEX)? A standard collaborative robot cannot. Special, extremely expensive robots are required for ATEX-certified environments. However, cobots (like UR and Dobot) are perfect for 90% of other applications: in the laboratory, in a fume hood (which is ventilated) or in quality control zones.

2. How does the robot withstand chemical spray? Robots with higher protection (IP65 and above) are resistant to splashing water and dust. In addition, special protective "suits" (sleeves) are used to protect the robot structure when working with highly aggressive acids.

3. Is the cobot accurate enough for pipetting? Absolutely. With a repeatable accuracy of ±0.02 mm, it is many times more accurate than the human hand. It ensures that the pipette is always at the same depth and at the same angle.

4. Do I have to be a programmer to teach it how to prepare samples? No. Modern cobots are programmed in a simple graphical interface, often by manually guiding the robot to the desired positions (over a test tube, over a scale, over an analyzer). A trained lab technician can handle the basic sequence.

Conclusion: Smarter chemistry, safer work

Robotization in chemistry is not about replacing chemists. It's about protecting them and giving them a tool that can do dangerous, monotonous, and mind-numbing work for them. The result is greater safety, more reliable data, and more efficient research and production.

Do you need to increase safety and precision in your laboratory or quality control? Visit svet-robotu.cz and discover flexible cobots that will become your most reliable assistants.