Laboratory photobioreactor Solstice

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Solstice from Uniqsis is a parallel 12-position LED photoreactor. Designed to run small scale batch photochemical reactions in parallel with precise temperature control, Solstice is a 12-position reactor tube holder that fits onto a standard (135mm dia. top-plate) magnetic stirrer. It is ideal for catalyst screening, optimisation of reaction conditions and for preparing small focused compound arrays. Easy to set up, tube reactors are fitted with septa and can be inerted and pre-loaded with reagent solutions or loaded/degassed in situ. The individual tube reactors (12 x 8 mL max.) are magnetically stirred and their temperatures can be conveniently controlled by connecting to an external thermoregulating recirculator. For reactions close to room temperature, a cold (or mixed cold/hot) water supply provides an effective low-cost alternative. An internal temperature probe accurately measures reaction temperatures. Optional inserts are available to create thin films under vortex stirring conditions to maximise light absorption. Recommended reaction volumes are 0.5 – 5 mL per tube. Solstice uses the Uniqsis Borealis LED light source. Standard options are 365 nm, 385 nm, 405 nm, 420 nm, 455 nm or 525 nm (with other wavelengths are available on request). Borealis LED lamps are available in both 180 W and 120 W versions. The former is driven by a digital power supply unit that can be controlled remotely and displays both the internal reactor and LED backplate temperatures. The more compact 120 W PSU (shown opposite) is designed for standalone operation and, although lacking a digital display interface, LED intensity can be adjusted using a rotary control knob.