Aluminum Reaction Block for Hotplate Stirrers

Aluminum Reaction Block for Hotplate Stirrers, Oil Bath Replacement

ZHC LAB’s Aluminum Reaction Blocks replace messy, hazardous oil baths with a clean, safe dry-bath heating solution compatible with standard round-top hotplate stirrers. Each block is machined from solid aluminum alloy with a 130 mm outer diameter, fitting directly onto any hotplate stirrer with a >=130 mm circular top plate – including IKA, SCILOGEX, Corning, and most other major brands – without adapters or base plates. The non-magnetic aluminum construction provides excellent, uniform heat transfer to all wells simultaneously without interfering with the hotplate’s magnetic stirring field, allowing simultaneous heating and stirring of all samples. Available in three form factors to suit different vessel types: Disc blocks accommodate multiple vials in a single circular format; Flask blocks cradle round-bottom flasks for direct, even conductive heating; Quarter blocks are wedge-shaped segments that can be combined in sets of four on one hotplate, enabling mixed vessel sizes in a single run. Maximum operating temperature 450deg C.

DIMENSIONAL SPECIFICATIONS:
Block outer diameter: 130 mm – fits hotplate stirrers with circular top plate diameter >=130 mm
Disc / 4 mL Vials / 30 Wells: well dia. 15.2 mm x depth 20 mm; fits 4 mL sample vials
Disc / 5 mL Vials / 30 Wells: well dia. 18.5 mm x depth 25 mm; fits 5 mL sample vials
Disc / 8 mL Vials / 19 Wells: well dia. 17.5 mm x depth 35 mm; fits 8 mL sample vials and scintillation vials
Disc / 20-50 mL Vials / 9 Wells: well dia. 28 mm x depth 40 mm; fits 20, 30, 40, and 50 mL sample vials and headspace vials
Flask / 25 mL Round-Bottom / 1 Well: well dia. 43.5 mm x depth 20.5 mm; fits standard 25 mL round-bottom flasks
Flask / 100 mL Round-Bottom / 1 Well: well dia. 66 mm x depth 32.5 mm; fits standard 100 mL round-bottom flasks
Quarter / 4 mL Vials / 11 Wells: well dia. 15.2 mm x depth 20 mm; 11 wells per segment; 4 segments fill one hotplate; fits 4 mL sample vials
Quarter / 8 mL Vials / 6 Wells: well dia. 17.85 mm x depth 26 mm; 6 wells per segment; 4 segments fill one hotplate; fits 8 mL sample vials
Material: aluminum alloy, uncoated finish
Maximum temperature: 450deg C

COMMON APPLICATIONS: Parallel heating and stirring of multiple sample vials in synthetic chemistry, analytical chemistry, and pharmaceutical workflows; safe oil bath replacement for round-bottom flask reactions; uniform temperature incubation of reaction vials during kinetic and screening studies; mixed-size parallel synthesis using quarter block combinations; sample preparation and dissolution workflows requiring precise, clean dry-bath heating.

USAGE NOTES: Disc and Flask blocks place directly onto any circular hotplate top >=130 mm – no adapter required. Quarter Blocks require a compatible B-type base tray (sold separately) to hold all four segments together on the hotplate. For Flask blocks, secure the flask neck with a retort stand clamp during operation. Allow block to cool fully before handling bare-handed; use heat-resistant gloves or insulated tongs when hot. Place individual PTFE stir bars in each vessel for simultaneous stirring. Not compatible with square-top hotplates without a circular adapter. Clean with dry cloth or mild solvent wipe; do not immerse.