The rate of delayed CGMP-ASEAN certification due to design layout errors is currently very high. Many of these errors stem from suboptimal planning of the testing area.

A GMP-certified cosmetics manufacturing plant must possess a standardized quality control (QC) system. The lab layout needs to thoroughly address physical issues such as mechanical vibration control and toxic gas containment booths.

This article analyzes layout solutions based on a standardized laboratory design model for the cosmetics industry. We will explore the arrangement and equipping of specialized furniture from Duc Duong.

1. Independent Lab QC Zone Planning

1.1 Physical Separation Between Physicochemical and Microbiological Sections

Quality management systems require complete isolation between analytical activities that are prone to cross-contamination. According to the ASEAN Guidelines for Cosmetic Good Manufacturing Practice, the microbiological testing lab must be designed to be physically and mechanically separate from the physicochemical section.

This separation prevents volatile chemical molecules or fine reagent dust from adhering to the agar plates. We establish a pressure-blocking buffer door in the changing room before personnel enter the specialized microbiological testing labs.

1.2 Establishing Technical Corridors and Sample Flow

The material flow process must strictly adhere to the one-way principle to minimize the risk of mechanical contamination. A standard floor plan layout should include a surrounding technical corridor to directly transport samples from raw material storage areas to the physico-chemical and microbiological testing rooms.
This closed-loop layout minimizes the need for testers to move across production areas. After registration, samples will be taken directly to the central sample storage room, placed on a clean and well-ventilated shelving system.

2. Designing One-Way Flow

2.1 Barrier Mechanism of the Padded Changing Room

To ensure the microbiology lab operates under optimal conditions, we need to carefully control the flow of personnel entering and exiting. The padded changing room (Changing Room) acts as an aerodynamic pressure barrier to prevent mechanical dust.
Testers must follow the correct procedure for changing into specialized protective clothing and disinfecting their hands before passing through the second door. 1. The central air conditioning (HVAC) system maintains a positive pressure differential between the culture cleanroom and the dressing room. This unidirectional airflow pushes all fine dust particles outwards when the door is opened.

2.2 Application of Interlocks for Pass-boxes and Airlocks

The transfer of laboratory materials between areas with different cleanroom levels requires a sample transfer box (Pass-box). This device is installed through the wall between the Environmental Preparation Room and the Infection Control Room.
The mechanical interlock mechanism ensures that only one door is allowed to open at a time. This intelligent design completely prevents sudden cleanroom pressure drops and leakage of contaminated air.

3. Setting up the central laboratory bench

3.1 Advantages of the enclosed cabinet structure of the Duc Duong central bench

The central physico-chemical area is always the place where many measurement operations are concentrated and contains countless analytical instruments. The enclosed cabinet central laboratory bench designed by Duc Duong is positioned at the core of the central physico-chemical laboratory.
The enclosed cabinet structure is made from high-grade phenolic wood or thick powder-coated steel sheet. This cabinet system provides a very large storage capacity for glassware, is completely dustproof and mold-resistant. At the same time, the entire electrical wiring and technical water piping system are run underground inside the cabinet compartment. This enclosed structure helps the lab achieve high aesthetics, meeting the international SEFA 8 accreditation standards.

Duc Duong’s enclosed central laboratory bench is used in the design of a testing lab for a GMP-certified cosmetics manufacturing plant

3.2 Chemical Resistance Properties of Phenolic Compact Tabletops

The working surface of the central workbench must be resistant to highly corrosive chemical agents. Duc Duong uses solid, molded phenolic compact panels with a standard thickness of 16mm or 20mm.

This material possesses complete resistance to strong acids (H2SO4, HNO3) and organic solvents. Its non-porous surface structure makes the workbench completely waterproof and prevents bacterial adhesion. Technicians can easily wipe away chemical stains with 70% isopropyl alcohol after each shift.

To receive optimized 2D/3D floor plan drawings for a cosmetics QC lab and a complete price quote for a SEFA 8 international standard laboratory workbench, please leave your information in the Duc Duong Company Contact Form so our project engineering team can assist you as quickly as possible.

4. Open-Drawer Wall-Mounted Laboratory Bench Design

4.1 Open-Drawer C-Frame System for Easy Floor Cleaning

In small auxiliary areas such as machine rooms or weighing rooms, optimizing floor space is essential. Duc Duong proposes installing open-drawer wall-mounted laboratory benches along the perimeter of the room.
The C-frame system is cast from high-quality, high-strength steel tubing with a thick epoxy coating. The open-drawer structure completely eliminates the cabinets under the bench, creating ample floor space. This design allows technicians to easily clean and disinfect the cleanroom floor daily. Dirt and fine dust do not accumulate in hidden corners under the bench, ensuring a clean testing environment.

4.2 Optimized Positioning of Large Analytical Equipment

The wall-mounted bench is designed to withstand very high static loads to safely support expensive analytical equipment systems. We installed the workbench along the glass wall of the machine room to accommodate heavy equipment such as HPLC or UV-Vis spectrometers.
The wall-mounted arrangement optimizes the flow of power cables and exhaust fumes. The spacious workbench also provides convenient sample preparation space for lab staff.

5. Vibration Control Solutions for the Weighing Room

5.1 Analysis of the Risk of Mechanical Wave Propagation from the Machine Room

The operation of mechanical motors from the adjacent machine room is the main cause of local vibration. The machine room contains shakers, centrifuges, or sample homogenizers operating at high intensity.

If the weighing room is not well mechanically insulated, mechanical vibrations will propagate through the floor to the weighing pan. This force resonance causes the weight results of 4-decimal or 5-decimal analytical balances to drift inaccurately. This directly destroys the data integrity of the entire batch of pharmaceutical/cosmetic tests.

5.2 Installation of a Specialized Anti-Vibration Weighing Platform

To completely eliminate vibrations, the weighing room must be equipped with a specialized anti-vibration weighing platform from Duc Duong. The weighing platform structure uses a thick, solid granite slab placed on a rubber cushion system to absorb mechanical vibrations.
The weighing platform frame is designed to be completely independent of the surrounding wall-mounted laboratory table frame. In addition, the HVAC airflow speed in the weighing room must be strictly controlled below 0.2 m/s. This aerodynamic solution prevents the weighing plate from being affected by the thrust of circulating air.

6. Control of Toxic Vapors in Chemical Warehouses

6.1 Organic Solvent Vapor Blocking Booths in Chemical Warehouses

Chemical warehouses are areas for the concentrated storage of organic solvent bottles and volatile reagents. These chemicals, when accumulated in high concentrations in a closed room, become extremely toxic.
Acid vapors or organic solvents (alcohol, acetone) easily adhere mechanically to adjacent areas. Without proper sealing at the nozzles, they can corrode equipment and skew microbiological testing results. Therefore, isolating and establishing a forced ventilation system in chemical storage areas is a mandatory GMP requirement.

6.2 Application of TOGA Safe Recirculating Chemical Storage Cabinet

To thoroughly address the risk of toxic gases, Duc Duong offers a line of large-scale smart chemical storage cabinets. This equipment integrates an advanced closed-loop recirculating air filtration system from the original manufacturer GT Scien.

TOGA smart chemical storage cabinets are used in laboratory design for GMP-certified cosmetic manufacturing plants

The filtration mechanism, based on the principle of activated carbon adsorption, completely captures toxic solvent molecules. The filtered air stream achieves a high level of purity and is discharged directly back into the lab without the need for an external exhaust duct. The TOGA Safe chemical cabinet is also equipped with intelligent gas concentration sensors, providing early warning of solvent leaks.

7. Thermal Stabilization Zone Planning

7.1 Establishing ICH Climate Zone Parameters – Zone IVB

Stability testing of cosmetics in the Vietnamese market must adhere to ICH technical guidelines. Vietnam is located in Climate Zone IVB (Hot and Humid Zone), requiring rigorous accelerated aging testing.
Set the parameters for the incubator to maintain a continuous temperature of 40°C ± 2°C.
Control the humidity in the long-term stabilization chamber to 75% RH ± 5% RH.

Separate the thermal stabilization chamber to prevent localized heat dissipation.

7.2 Temperature and Humidity Validation and Calibration Cycle

All incubator and convection drying equipment must undergo thorough operational validation (IQ/OQ/PQ). Temperature and pressure sensor probes must undergo a rigorous calibration cycle.

We need to schedule periodic mid-term inspections every 6 to 12 months, adhering closely to ISO 17025 standards. This activity helps control errors, eliminate sensor drift errors, and ensure long-term integrity of test data.

Conclusion

Planning the infrastructure and installing interior equipment for a GMP-certified cosmetics manufacturing plant requires comprehensive investment and in-depth technical understanding. From the physical separation between the Central Chemical and Physical Laboratory and the Microbiology Laboratory, establishing a one-way flow through air dampers, to the application of the Duc Duong central enclosed and wall-mounted open laboratory benches. Furthermore, technical solutions such as vibration damping for the weighing room, control of toxic gases in the chemical storage using TOGA Safe cabinets, and control of aging climate conditions according to ICH Zone IVB all play a decisive role in ensuring the integrity of measurement data. Duc Duong Company is proud to be a general contractor for the design and supply of high-quality laboratory equipment, comprehensively supporting the success of your business.

If you are in need of consultation on the optimal layout design of a cosmetic QC lab or require a complete quote for certified laboratory benches, chairs, and chemical cabinets, please contact and register your information at DUC DUONG SCIENCE AND TECHNOLOGY COMPANY to receive the most in-depth support from our project engineering team.

 

DUC DUONG SCIENCE AND TECHNOLOGY COMPANY

Address: 1014/67 Tan Ky Tan Quy, Binh Hung Hoa Ward, Binh Tan District, Ho Chi Minh City

Tel: (028) 3762 8042 – 3762 8043 – 3750 8514 – 3750 8793

Fax: 028 37628043

Email: ducduong@ducduongco.com

Website: ducduongco.com

ZALO OA: DUC DUONG SCI

 

FAQ

1. Why does the standard lab layout place the Weighing Room next to the Machine Room and Chemical Storage Room?

Optimized laboratory layout plans always place the Weighing Room, Machine Room, and Chemical Storage Room in a closed unit to optimize the time for analyzing actual samples. After the technician retrieves reagents from the smart storage cabinet in the Chemical Storage Room, the sample is transferred directly to the Weighing Room for quantitative measurement, and then immediately transferred to the Machine Room to run the analytical measurement systems without having to move long distances through other clean rooms, eliminating the risk of air contamination or clean room pressure drop.

2. What are the differences in functionality and application between the enclosed central laboratory bench and the open wall-mounted bench from Duc Duong?

Duc Duong’s central laboratory bench with enclosed drawers is positioned at the core of the physico-chemical lab, boasting an optimized enclosed drawer system for storing bottles, glassware, and concealed technical cables. Meanwhile, the wall-mounted laboratory bench with open drawers uses a C-frame steel structure without drawers, suitable for placement against the wall of a narrow machine room to support heavy analytical equipment, allowing technicians to easily clean and sweep the cleanroom floor according to GMP standards.

3. How does the large TOGA Safe smart chemical storage cabinet remove flammable organic solvent vapors without exhaust pipes?

The TOGA Safe smart chemical storage cabinet, officially distributed by Duc Duong, utilizes a closed-loop recirculating adsorption filtration system from GT Scien, a South Korean manufacturer. An integrated convection fan continuously draws acid vapors and volatile organic solvents from the chemical storage through a high-density activated carbon filter system. The mechanical filtration process retains all harmful gas molecules and returns completely clean air to the lab without the need for a bulky external exhaust duct system.

4. What are the climatic conditions for long-term stability testing of cosmetics in the ICH Zone IVB in the Vietnamese market?

Vietnam is located in climate zone IVB (tropical hot and humid), therefore, accelerated aging tests of cosmetics in the ICH zone require strict temperature maintenance at 40°C ± 2°C and humidity at 75% RH ± 5% RH. The temperature-controlled incubator system needs to be checked and the sensors calibrated periodically every 6-12 months to ensure that measurement errors do not distort the results of monitoring product shelf life.

5. What mechanical measures prevent errors in micro-weighing in a weighing room adjacent to an area with strong motor vibration?

To eliminate mechanical shocks propagating from the machine (shaker, centrifuge), the weighing room must be equipped with a specialized anti-vibration weighing platform featuring a thick, solid granite surface placed on an independent system of shock-absorbing rubber pads. At the same time, airflow from the HVAC system must not blow directly onto the weighing plate to avoid mechanical vibrations, and the weighing room door must always be tightly closed to provide perfect sound insulation from the adjacent machine room.