MSR Reactor Stove System - boiling water and melting snow | enclosed heat exchanger | pressure regulator | 1.0, 1.7, 2.5 L

The Reactor is an integrated stove and cookware system built to hold its performance in cold and wind. Its heat exchanger completely encloses the radiant burner head, which MSR says virtually eliminates the effects of wind on boil times and fuel use. MSR states it boils half a litre of water in 1.5 minutes in head-to-head lab tests, and calls it the fastest and most fuel-efficient stove ever made.

Key Features

• Integrated system: stove and high-efficiency cookware combined into a compact, self-contained unit
• MSR states a boil time of 1.5 minutes for 0.5 litre of water in head-to-head lab tests
• Heat exchanger completely encloses the radiant burner head to reduce the effects of wind
• Patent-pending radiant burner, heat exchanger and internal pressure regulator for efficiency in all conditions
• Self-contained and compact: the stove and fuel fit inside the pot
• 1.0 litre system for trips with 1 to 2 people, or where weight and space are at a premium
• 1.7 litre system as an all-round performer, boiling water and melting snow for two or more
• 2.5 litre system boils enough for five freeze-dried meals at once, or melts snow for 2 to 3 people
• All systems include the Reactor pot and stove, a BPA-free strainer lid, a PackTowl pot protector and a folding, locking handle

The performance claims above, including the fastest and most fuel-efficient wording, are MSR's own. The 1.0 L Reactor system nests optimally with MSR's smaller-diameter 4 oz canisters, which are sold separately.

Specifications