Manual Wet Bench Systems for Semiconductor R&D & Small-Batch Manufacturing
Cost-effective, versatile wet chemical processing engineered for R&D laboratories, MEMS, and pilot production lines. Featuring modular tank configurations, high-purity FM4910 materials, and full ergonomics for safe, precision cleaning. Discover our full range of products to find the right solution for your lab.
Robust Hardware Architecture for Manual Wet Bench Systems
KOSEN SEMI manual wet equipment utilizes top-tier anti-corrosion materials and modular structural designs to deliver unmatched longevity and process reliability. Engineered specifically for university semiconductor laboratories, MEMS facilities, and low-volume R&D lines, our structural architecture guarantees uncompromising chemical compatibility, precise process repeatability, and multi-layered operator protection. Learn more about our core mission on our about-us page, or explore our full line of semiconductor processing products.
Acid & Solvent Isolation
Independent acid, alkali, and organic solvent compartments feature complete dry and wet segregation to prevent cross-contamination across delicate wafer processes. Dedicated exhaust plenum channels and double-contained sumps isolate volatile fumes for pristine cleanroom operation.
Anti-Corrosive Materials
Precision-fabricated using high-purity PFA, PVDF, and FM-PP thermoplastic sheets. Continuous thermal-bead welding eliminates structural seam vulnerabilities, ensuring structural integrity and long-term resistance against aggressive chemical degradation.
Ergonomic Safety Protection
Counterbalanced clear sliding sash doors and transparent splash shields shield technicians from corrosive chemical splashes. Engineered reach dimensions and intuitive deck ergonomics minimize operator fatigue during manual wafer cassette transfers.
Quick Dump Rinse Systems
High-performance Quick Dump Rinse (QDR) tanks feature automated pneumatic bottom dump valves and overhead multi-jet spray nozzles for instantaneous bath evacuation. Rapid rinsing cycles dramatically reduce chemical drag-out while maximizing DI water conservation.
Engineering Excellence in Semiconductor Wet Bench Construction
Every manual wet bench station engineered by KOSEN SEMI pairs chemical resistance with rigid structural stability. By physically isolating chemical plumbing bays from electrical control enclosures, our equipment maximizes operational uptime, eliminates electrical component corrosion, and simplifies routine cleanroom maintenance. These solutions build directly on our high-performance wafer-cleaning-systems technology.
- Isolated Chemical Cabinets: Lower storage enclosures feature secondary containment sumps, chemical-resistant supply lines, and optical leak sensors for early hazardous spill detection.
- Laminar Flow Hood Integration: Overhead Fan Filter Unit (FFU) support maintains continuous ISO Class 5–7 air cleanliness around open wafer processing baths.
- Modular Deck Reconfiguration: Removable process deck inserts allow flexible layout modifications for quartz baths, ultrasonic/megasonic tanks, and spray guns as research requirements evolve.
| Architectural Element | Material Selection | Safety & Compliance Standard | Key Performance Benefit |
|---|---|---|---|
| Main Chassis Frame | High-Purity Natural/White Polypropylene or FM-PP | FM4910 Specification Compliant | Resists structural degradation and warping from continuous acid fume exposure |
| High-Temperature Processing Baths | High-Purity Quartz, PFA, or PTFE Tank Liners | Over-Temperature & Level Interlocks | Sustains aggressive hot acid etching and cleaning cycles up to 180°C (356°F) |
| Chemical Fluid Lines & Exhaust | Fluoropolymer PFA Tubing & PVDF Exhaust Ducting | SEMI S2 Exhaust Flow Sensing | Ensures leak-free chemical transfer and complete containment of toxic vapors |
| Operator Shielding & Sash | Transparent Flame-Retardant Polycarbonate or Tempered Glass | SEMI S8 Ergonomic Guidelines | Provides crystal-clear process visibility with complete splash containment |
Modular Tank Configuration for Manual Wet Bench Systems
KOSEN SEMI manual wet processing stations feature fully modular tank architectures designed for flexible integration in semiconductor R&D and low-volume production. Build your ideal wet station by selecting precision-engineered tank modules optimized for high-temperature acid wafer cleaning systems, 200 nm standard particle removal, optimized down to 100 nm, high-efficiency rinsing, and solvent drying—all fully tailored to your chemical matrix and substrate sizes.
High-Temperature Heated Quartz Baths
High-purity fused quartz baths serve as the industry standard for aggressive, high-temperature chemical processing in semiconductor fabrication. KOSEN SEMI quartz tanks withstand extreme acid formulations including Piranha (H₂SO₄/H₂O₂), SPM, hot phosphoric acid (H₃PO₄), and dilute HF etches without material degradation or chemical leaching.
- Operating temperature: Ambient to 180 °C with precision PID temperature control and dual-element immersion heating
- Chemical compatibility: H₂SO₄, H₂O₂, HNO₃, H₃PO₄, HCl, HF (dilute), SC-1, and SC-2 mixtures
- Wafer capacity: Standard 25-wafer cassette configuration (4", 6", or 8") or customized dual-cassette setups
- Safety integration: Dual over-temperature cutoffs, optical liquid-level interlocks, and FM4910 fire-retardant panel housings
| Parameter | Specification |
|---|---|
| Tank Material | High-purity optical-grade fused quartz |
| Wafer Size Support | 100 mm (4"), 150 mm (6"), 200 mm (8") & custom substrates |
| Temperature Range | Room Temperature to 180 °C |
| Temperature Uniformity | ±0.5 °C across active bath volume |
| Heater Configuration | Encapsulated quartz immersion heater / external IR |
| Drain Assembly | High-purity PTFE pneumatic bottom drain valve |
Need a customized tank architecture for your wet process?
KOSEN SEMI application engineers leverage advanced Engineering Capability to configure every manual wet bench to match your exact substrate sizes, chemical compatibility requirements, and facility layout. Combine any quartz, megasonic, QDR, or solvent module into a seamless workstation.
Target Applications for Manual Wet Bench Systems
KOSEN SEMI manual wet bench systems deliver versatile chemical processing, uncompromised operator safety, and superior process repeatability. Engineered specifically for high-mix, low-volume environments, our manual wet processing stations support critical semiconductor workflows ranging from foundational microfabrication research to pilot production across various industries.
Whether executing hydrofluoric acid (HF) etching, solvent photoresist stripping, RCA wafer cleaning systems processes, or fast-rinse sequences, our modular manual wet benches adapt to strict cleanroom requirements while fully complying with SEMI S2/S8 and FM4910 fire safety standards.
University Semiconductor Laboratories
Academic cleanrooms require flexible wet processing equipment that accommodates diverse researchers and constantly changing chemical protocols. KOSEN SEMI builds manual wet processing stations using high-purity PFA and FM-PP materials resistant to aggressive acids, bases, and organic solvents.
- ✓Multi-User Safety: Transparent sliding splash shields, lip exhaust hoods, and dual EMO buttons protect operators.
- ✓Flexible Substrate Sizes: Easily processes 100mm (4"), 150mm (6"), and 200mm (8") wafers within one versatile bench deck.
- ✓Water-Saving Rinsing: Integrated Quick Dump Rinse (QDR) tanks minimize deionized (DI) water consumption.
MEMS & Compound Semiconductor Lines
Low-volume commercial manufacturing for MEMS, GaAs, GaN, and InP devices demands precise chemical bath conditions and high yields without complex, expensive automation. Our manual wet bench systems provide consistent thermal control and stable processing for specialized microelectronics.
- ✓Cross-Contamination Isolation: Separate acid, alkaline, and solvent processing zones prevent cross-chemical interference.
- ✓Precision Particle Control: Constant-temperature quartz heating baths and megasonic agitation remove micro-particulates.
- ✓FM4910 Compliance: Engineered with FM4910 certified flame-retardant materials for cleanroom approval.
Wafer R&D Cleaning & Process Testbeds
Prior to deploying chemical recipes on automated production lines, process engineers rely on manual testbeds to verify etch dynamics, calibrate chemical ratios, and perform surface pre-treatments, or complement advanced single wafer cleaning systems. KOSEN SEMI manual benches mirror automated tank geometries for effortless process transfer.
- ✓Rapid Recipe Optimization: Validates etch rates, chemical bath longevity, and rinse timing at minimal cost.
- ✓Point-of-Use Drying Guns: Handheld N2 drying guns and solvent spray wands support custom sample preparation.
- ✓Exhaust & Drain Interlocks: Integrated sensor interlocks manage exhaust flow and fluid containment safely.
Application Requirements & Configuration Matrix
Compare key operational metrics across primary manual wet bench deployment scenarios to select the optimal equipment configuration for your cleanroom facility.
| Target Environment | Primary Objective | Chemical Compatibility | Recommended Bench Features |
|---|---|---|---|
| University Cleanroom | Multi-user microfabrication training, prototype etching, and exploratory research | HF, BOE, KOH, Solvent Photoresist Strippers, Piranha | Sliding splash guards, dual EMO buttons, QDR tanks, handheld N2 guns |
| MEMS Production | Low-volume wafer etching, substrate surface prep, and high-yield stripping | H2SO4, H2O2, H3PO4, IPA, Ammonium Hydroxide | Heated quartz baths, megasonic agitation, FM4910 materials, drain isolation |
| Wafer R&D Testbed | Chemical recipe verification, etch rate calibration, and pre-treatment testing | Specialized acid blends, alkaline solutions, ultra-pure water (UPW) | Modular tank bays, digital process timers, temperature controllers, leak sensors |
Advanced Safety Engineering and Environmental Compliance
In manual wet processing environments, safeguarding cleanroom personnel and preventing chemical exposure are paramount. KOSEN SEMI strictly enforces SEMI S2/S8 standards and FM4910 cleanroom safety codes across every manual wet bench system. By integrating ergonomic structural layouts with automated hazard mitigation, our manual wet processing wafer-cleaning-systems deliver robust containment against corrosive acids, aggressive solvents, and toxic fumes without hindering research or production throughput.
Engineered Exhaust Systems & Zero-Leak Fume Containment
Corrosive vapors and volatile chemical fumes pose critical risks to cleanroom operators and surrounding air purity. KOSEN SEMI manual wet bench systems feature engineered rear plenum chambers and perimeter lip exhaust slots that maintain negative static pressure directly at the fluid interface.
- Laminar Face Velocity Control: Sustains a consistent 100 FPM face velocity across the sash opening, creating a reliable air curtain that prevents chemical fume backflow during manual operator access.
- Segregated Exhaust Manifolds: Independent exhaust pathways separate acid/alkaline vapors from organic solvents, eliminating hazardous cross-chemical reactions inside the facility ductwork.
- Real-Time Differential Pressure Monitoring: Differential pressure sensors constantly track exhaust performance, triggering visual alarms and interlock shutdowns if airflow drops below target safety thresholds.
Automated Multi-Layer Interlocks & Active Hazard Suppression
Fail-safe automated controls are essential to prevent secondary containment breaches during unexpected thermal or electrical events. KOSEN SEMI incorporates hardware interlocks that trigger instantaneous chemical isolation without relying solely on operator intervention.
- Recessed Emergency Off (EMO) Controls: Front-mounted, splash-shielded EMO buttons isolate electrical power, shut off heating elements, and close chemical supply valves immediately upon actuation.
- Secondary Containment Leak Sensors: Dual-probe optical and conductive leak sensors in double-walled containment sumps initiate fast-acting shutoff valves the moment liquid accumulation is detected.
- Automated Bath Fire Suppression: High-temperature quartz and solvent immersion tanks feature integrated CO2 or N2 fire suppression loops for immediate thermal containment and suppression.
SEMI S2 & SEMI S8 Compliant Ergonomic Design
Reducing fatigue during intricate manual wafer immersion and rinsing improves process repeatability while preventing accidental chemical splashes. Each station is designed in strict compliance with SEMI S8 ergonomic principles. Learn more about our advanced Engineering Capability that powers these compliant designs.
- Counterbalanced Transparent Sashes: Smooth-sliding, counterweighted safety glass or clear plastic splash guards provide height-adjustable protection with clear line-of-sight visibility.
- Optimized Deck Heights: Ergonomically calculated work surface heights minimize lower back strain and reaching over-extension during repetitive wafer cassette transfers.
- Primary Reach Utility Placement: Pneumatic N2 guns, DI water spray wands, and digital temperature controllers are placed within immediate operator reach zones to streamline processing steps.
FM4910 Certified Materials & Chemical Compatibility
Structural reliability and cleanroom fire safety depend heavily on certified material selection. KOSEN SEMI builds manual wet benches using FM4910-listed, flame-retardant thermoplastics including high-density polypropylene (FM-PP), PVDF, and ultra-pure PFA. These non-contaminating materials withstand harsh chemical attack from hydrofluoric acid (HF), buffered oxide etch (BOE), hot phosphoric acid, and organic solvents while ensuring zero flame propagation in cleanroom environments, engineered at our specialized manufacturing-facility.
Safety Architecture
Fully Enclosed Exhaust Deck with Integrated Sash and Emergency Interlocks
Semiconductor Safety Certifications
SEMI S2
Environmental Health and Safety Standard
SEMI S8
Ergonomic Engineering Guideline
FM4910
Cleanroom Fire Retardant Standard
CE Compliance
Machinery and Electrical Directives
Key Environmental Safety Parameters
Manual vs. Automatic Wet Bench: Which Is Right for You?
KOSEN SEMI engineers both manual and fully automated wet processing equipment — compare key dimensions to choose the right system for your facility.
| Dimension | Manual Wet Bench | Automatic Wet Bench |
|---|---|---|
| Throughput Capacity | Low to Medium (R&D / Pilot) | High Volume (Commercial Fab) |
| Equipment Cost | Low Initial Capital Investment | Higher Capital Expense |
| Footprint | Compact & Space-Saving | Larger Operational Footprint |
| Process Flexibility | Instant Recipe & Chemical Switch | Fixed Automated Sequences |
| Operator Requirement | Hands-On Skilled Operator | Minimal / Unattended Operation |
| Best Use Case | R&D, University Labs, MEMS | Volume Fab Production |
| Human Intervention | Operator-Guided Transfer | Fully Robotic / Zero Intervention |
Ideal for R&D and Laboratory Environments
- Low investment threshold — minimizes upfront capital commitment
- Rapid process adaptation — switch chemistries and recipes in minutes
- Purpose-built for experimental R&D and substrate testing
- Compact footprint tailored for space-constrained cleanrooms
- Direct operator control for custom, non-standard wet processing
Built for High-Volume, Zero-Intervention Production
- High throughput output designed for volume semiconductor manufacturing
- Automated robotic transfer — complete zero-intervention handling
- Superior batch-to-batch consistency and process repeatability
- Eliminates human error and minimizes cleanroom contamination
- Real-time PLC process monitoring, recipe locking, and data logging
Require high throughput and automated repeatability? Explore our Automatic Wet Bench Systems — engineered and manufactured in-house by KOSEN SEMI. For specialized needs, we also offer advanced wafer cleaning systems to ensure pristine substrate surfaces.
Independent R&D. Full Manufacturing Control.
KOSEN SEMI leverages extensive engineering capability and maintains end-to-end design and manufacturing capabilities at our state-of-the-art manufacturing facility for both manual and fully automatic wet processing systems — ensuring every equipment build meets stringent semiconductor standards.
- In-house engineering, precision fabrication, and cleanroom testing
- Fully configurable for HF, SC1, SC2, SPM, and solvent chemistries
- Dedicated application engineers supporting consultation through installation
Frequently Asked Questions | Manual Wet Bench Systems
Find technical details on substrate compatibility, safety protocols, chemical waste management, and customization options for KOSEN SEMI manual wet processing stations.
What wafer sizes and substrates are compatible with KOSEN SEMI manual wet benches?
KOSEN SEMI manual wet bench systems feature modular deck layouts engineered to process a versatile range of substrate sizes and material compositions commonly utilized in semiconductor manufacturing and R&D laboratories:
- Standard Wafer Diameters: Full compatibility with standard 4-inch (100mm), 6-inch (150mm), and 8-inch (200mm) wafer cleaning systems, carriers, and cassettes.
- Compound Substrates: Customized quartz and PVDF bath inserts designed for GaAs, GaN, SiC, InP, sapphire, and glass substrates.
- Piece-Part & Small Sample Holders: Specialized mesh baskets and adjustable fixturing for non-standard pieces, university cleanroom experiments, and MEMS prototype processing.
Our engineering team collaborates directly with your process engineers to customize tank dimensions and pitch layouts, ensuring complete compatibility with your existing cleanroom cassette infrastructure.
How are chemical waste segregation and facility exhaust managed on the equipment?
Streamlined chemical waste management and precise cleanroom exhaust integration are fundamental components of KOSEN SEMI equipment design:
- Effluent Stream Segregation: Independent, color-coded drain manifolds strictly separate acid, alkaline, and solvent effluents, preventing dangerous cross-reactions and simplifying facility waste treatment.
- Exhaust Velocity & Airflow Design: Lip-exhaust slots and continuous rear plenum hoods maintain optimal capture velocity across chemical bath surfaces, strictly conforming to SEMI S2 guidelines to keep toxic fumes out of the operator breathing zone.
- Leak Detection & Containment: The cabinet lower basin acts as a liquid-tight secondary containment sump equipped with dual optical sensors linked directly to automatic emergency shut-off valves.
- Facility Connections: Standardized rear flange adapters and quick-connect plumbing interfaces allow simple tie-ins to cleanroom acid scrubbers, solvent exhaust ducts, and neutralized drain headers.
What special protective measures are implemented for handling strong acids like HF?
Processing aggressive chemistries such as Hydrofluoric acid (HF), Buffered Oxide Etch (BOE), and Piranha (H2SO4/H2O2) requires uncompromising safety controls and specialized materials:
- FM4910-Certified Materials: Cabinet structures and chemical tanks are fabricated from high-purity, fire-retardant materials including Natural Polypropylene (NPP), PVDF, and Teflon PFA to withstand corrosive chemical exposure without material degradation.
- Ergonomic Splash Protection: Counterbalanced vertical sliding sashes crafted from clear polycarbonate or tempered safety glass isolate operators while allowing unobstructed process monitoring.
- Interlocked Safety Systems: Integrated dual-hand activation controls, Emergency Power Off (EPO) switches, cover position sensors, and auto-retractable N2/DI water spray guns minimize human operator error.
- Integrated Safety Fixtures: Hand-held eye wash stations, splash shields, and optional automated fire suppression systems (CO2 or fine water mist) ensure strict compliance with SEMI S2/S8 standards.
What is the typical manufacturing lead time and post-sales delivery process?
Delivery schedules for KOSEN SEMI equipment vary based on structural complexity and specialized component integration:
- Standard Modular Wet Benches: Delivery typically ranges between 6 to 8 weeks following technical design approval and purchase confirmation. Learn more about-us and our production timeline.
- Customized R&D Systems: Engineering Capability for custom configurations incorporating specialized megasonic tanks, temperature-controlled quartz baths, or complex chemical spiked dosing systems usually ship within 8 to 12 weeks.
- Factory Acceptance Testing (FAT): Prior to shipment, every manual wet station undergoes extensive FAT validation—including hydrostatic leak testing, electrical safety checks, and airflow balance inspection.
- Post-Sales & Field Support: The KOSEN SEMI field engineering team provides step-by-step installation guidance, facility hookup advice, operator safety training, and lifetime technical support.
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