Home » Equipment Wiki » Mixing & Reaction Setup

Mixing & Reaction Setup

A definitive guide to assembling practical organic reaction apparatus. Understand the operational logic behind reaction vessels, heating applications, stirring mechanisms, condensers, reflux conditions, and controlled atmosphere setups.

Annotated overview of a mixing and reaction setup with flask, condenser, heating source, and support points

Core Apparatus Families

Reaction Vessels

Choose vessels based on reaction use, attachments, scale, and atmosphere needs.

Overview of common reaction vessels including round-bottom flasks, pear-shaped flasks, Schlenk vessels, and pressure tubes

Heating for Reaction Setups

Match the heating method to the vessel, temperature range, and setup demands.

Comparison of heating methods for reaction setups including heating mantles, hot plates, heating baths, and heating blocks

Mixing and Stirring

Understand when simple stirring is enough and when the setup needs more control.

Mixing and stirring tools used in reaction setups including manual mixing tools, magnetic stirring, and overhead stirring

Condensers

Compare condenser types by cooling behavior, workflow role, and setup fit.

Comparison of common laboratory condensers including Liebig, Allihn, Graham, Dimroth, air condensers, and related condenser types

Reflux Setups

See how reflux setups change as more components and constraints are added.

Annotated reflux setup showing flask, condenser, heating source, and support logic in an organic reaction setup

Schlenk Line Systems

Learn the core hardware used when ordinary open-bench setups are no longer enough.

Overview of Schlenk line systems including inert-atmosphere hardware, vacuum manifold, bubbler, and cold trap

Setup Logic & Operational Principles

A setup is not a rigid parts list. Success relies on your ability to judge component compatibility, establish proper matching logic, and conduct rigorous pre-start readiness checks.

Basic Setup Principles

Core rules for assembling stable apparatus.

Heating–Vessel Matching Logic

Avoiding thermal shock and uneven heating.

Stirring Method Selection Logic

Deciding based on viscosity and scale.

Condensation and Reflux Logic

Optimizing surface area and cooling flow.

Atmosphere-Control Logic

Sealing out air vs. managing internal pressure.

Safety, Sealing, and Leak Checking

Greasing joints and verifying seals.

Setup Readiness and Startup Checks

The final walkthrough before initiating reaction.

Related Advanced Topics

Pressure Reactions → Air-Sensitive and Moisture-Sensitive Work → Scale and Load Changes in Reaction Setup →

Starting Organic Lab Work

Ideal for beginners. Understand the fundamental workflows before handling complex reactions.

Explore Path

Understanding Core Setups

Master the integration of individual apparatus pieces into functional, safe setups.

Explore Path

Moving Into Air-Sensitive & Vacuum Work

Advance your skills by learning how to rigorously exclude air and moisture from reactions.

Explore Path

Troubleshooting Related Setups

Diagnose setup issues by identifying the symptom you are currently observing at the bench.

Why is my reflux not returning properly? → Why is my distillation unstable? → Why am I losing vacuum? → Common beginner setup mistakes → Unsure whether the setup is assembled correctly? →