Batch LED Photoreactor System

Temperature-Controlled Parallel Photochemistry for Fast Optimisation and Reliable Scale Translation

The batch photoreactor is a 12-position, temperature-controlled batch LED photoreactor designed for rapid reaction optimisation, catalyst screening, and reproducible photochemical research.

This batch photoreactor converts a standard 135 mm laboratory magnetic stirrer into a high-power, multi-position batch photochemistry platform. Configured with 12 × 8 mL septum-sealed glass tube reactors, the batch photoreactor enables parallel screening of reaction conditions under tightly controlled temperature and irradiation environments. Designed for research laboratories and process development teams, the batch photoreactor integrates with fixed-wavelength LED lamp modules (365, 385, 405, 420, 455 and 525 nm) in either 120 W or 180 W configurations. Variable intensity control, liquid cooling, and symmetrical LED geometry ensure uniform irradiation across all tube positions, enabling meaningful comparison between reaction conditions. In documented optimisation studies at 365 nm and 72 W input power, the batch photoreactor was used to evaluate solvent, concentration, and lamp intensity effects in quinoline formation and Minisci reactions. The system enabled rapid screening of parameters at controlled temperatures of 10–15 °C, supporting efficient translation from batch optimisation to continuous flow processing. For laboratories requiring higher working volumes, the MAXI configuration provides 12 × 20 mL tube capacity while maintaining identical optical and thermal architecture.

Engineered for Parallel Optimisation

• 12 × 8 mL Septum-Sealed Glass Tubes — Facilitates sampling, sparging/de-gassing, and oxygen exclusion during reaction.
• High-Power LED Modules — 120 W or 180 W fixed-wavelength the photoreactor lamps with liquid cooling.
• Uniform Irradiation Across All Tubes — Hexagonal LED core and geometrical tube placement minimise positional bias.
• Thermal Cut-Out Protection — Automatic shut-off if LED backplate temperature exceeds 50 °C.
• Optional Thin-Film Tube Inserts — Increase illuminated surface area and improve light absorption without interfering with stirring.
• 12 Positions — Parallel reaction screening in a single irradiation cycle
• 10–100% — Digital intensity control range (180 W PSU)

Commercially Structured for Laboratory Adoption

• Upgradeable Platform — Customers can transition from 120 W analogue to 180 W digital control as requirements evolve.
• Defined Wavelength Portfolio — Standardised modules simplify stocking and sales positioning.
• Integrated Cooling Strategy — Supports connection to existing laboratory water supply or recirculators.
• Mechanical Safety Interlock — Prevents illumination when lamp is removed from tube adaptor.
• Research-Validated Performance — Used in documented optimisation studies comparing lamp power, solvent, and concentration effects.
• 120 W / 180 W — Selectable LED power configurations
• 365–525 nm — Available fixed-wavelength LED options

Why Laboratories Choose the batch photoreactor

• Parallel Data Generation — Accelerates optimisation of discrete parameters such as solvent and concentration.
• Reproducible Tube-to-Tube Conditions — Equal irradiation and shared temperature control reduce experimental variability.
• Seamless Transition to Flow — Batch-optimised conditions can be translated to compatible continuous photoflow systems.
• Compact Laboratory Footprint — Converts existing stirrer infrastructure without dedicated reactor stands.
• Modular System Architecture — Separate tube holder, lamp module, and PSU simplify maintenance and upgrades.
• 12 × 8 mL — Standard the batch photoreactor reactor capacity
• 12 × 20 mL — MAXI configuration reactor capacity

For Engineers

The batch photoreactor is engineered for reproducible photochemistry, where temperature control and optical consistency directly impact reaction outcomes.

• Precise Temperature Management — Cooling jacket supports connection to water supply or thermoregulating circulator; documented operation at 10–15 °C in optimisation studies.
• Digitally Controlled 180 W PSU — Adjustable intensity from 10–100% in 5% increments with current and internal reactor temperature monitoring.
• Analog 120 W Scholar PSU Option — Constant current device with over-current protection and 20% step intensity adjustment.
• Symmetrical Optical Architecture — Identical LED spacing and fixed positioning ensure consistent tube-to-tube irradiation.
• Communication Interfaces — Ethernet, RS232 and USB connectivity available with digital PSU for integration into automated laboratory workflows.

For Laboratories

The batch photoreactor enables laboratories to adopt parallel photochemical optimisation using existing magnetic stirrer infrastructure.

• Fits 135 mm Magnetic Stirrers — Converts standard lab equipment into a 12-position photoreactor.
• Upgradeable Power Architecture — Offer 120 W or 180 W LED modules depending on customer performance requirements.
• Multiple Wavelength Options — 365, 385, 405, 420, 455 and 525 nm modules support diverse photochemical applications.
• Clear Scale-Up Pathway — Validated batch optimisation can be translated to compatible continuous flow systems.
• MAXI Higher-Volume Variant — 12 × 20 mL configuration expands usable reaction volume while preserving optical symmetry.

Documentation & Ordering

Configured systems are supplied with tube holder assembly, compatible LED module, and selected power supply.

• The batch photoreactor 12 × 8 mL System — Complete holder including stirrer interface, reactor tubes, septa, stir bars and temperature sensor.
• MAXI 12 × 20 mL System — Expanded-volume tube holder for higher throughput screening.
• Contact the Asynt Company: https://www.asynt.com/products/photochemistry/
• Batch Photoreactor 12 × 8 mL System — Complete holder including stirrer interface, reactor tubes, septa, stir bars and temperature sensor.
• MAXI 12 × 20 mL System — Expanded-volume tube holder for higher throughput screening.