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Warmers

Warmers

MFH universal double chemical hand warmer.
MFH universal double chemical hand warmer.

9,99

24h shipping

MFH gasoline hand warmer
MFH gasoline hand warmer

28,90

24h shipping

Carbon cartridges for MFH heater
Carbon cartridges for MFH heater

16,90

24h shipping

MFH carbon hand warmer

28,90

24h shipping

MFH gasoline heater filament

13,90

24h shipping

MFH gel hand warmer
MFH gel hand warmer

21,90

24h shipping

Mil-Tec Professional catalytic heater
Mil-Tec Professional catalytic heater

47,90

24h shipping

Zippo hand warmer silver HB 9S USB
Zippo hand warmer silver HB 9S USB

169,00

24h shipping

Zippo gold HB 9S USB hand warmer
Zippo gold HB 9S USB hand warmer

169,00

24h shipping

Zippo chrome hand warmer
Zippo chrome hand warmer

119,00

24h shipping

Zippo hand warmer black
Zippo hand warmer black

119,00

Not available

Pinewood glove warmer

12,90

Not available

Arpol warming insole for shoes
Arpol warming insole for shoes

19,90

Not available

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Frequently Asked Questions

1️⃣ How does the chemical heater work?

A chemical heater generates heat from the crystallization of a supersaturated salt solution, usually hydrated sodium acetate or sodium thiosulfate. To initiate the chemical reaction, a metal sheet placed inside a hermetically sealed bag of solution is used. The bending of the tin precipitates the solution out of equilibrium, thus triggering the aforementioned salt crystallization reaction. In the process, heat is generated (about 50°C), which we use to heat the body.

2️⃣ What's inside a hand warmer?

A chemical heater generates heat from the crystallization of a supersaturated salt solution, usually hydrated sodium acetate or sodium thiosulfate. To initiate the chemical reaction, a metal sheet placed inside a hermetically sealed bag of solution is used. The bending of the tin precipitates the solution out of equilibrium, thus triggering the aforementioned salt crystallization reaction. In the process, heat is generated (about 50°C), which we use to heat the body.

3️⃣ How to reuse a hand warmer?

Once the heater has cooled (fully crystallized), we can easily and quickly regenerate the heater. To reverse crystallization, the heater should be boiled in water for 10 to 10 minutes, until the visible crystals dissolve. We can regenerate the heater immediately after cooling or immediately before the next use.

4️⃣ How long to cook a hand warmer?

To reverse crystallization, most heaters should be boiled in water for 6 to 10 minutes until visible crystals dissolve. We can regenerate the heater immediately after cooling or immediately before the next use. It is a good idea to line the bottom of the pot with a cloth to reduce contact between the hot metal and the surface of the bag.

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