electric muffle furnace is a compact, electrically heated box furnace with a refractory muffle chamber that protects samples from direct contact with heating elements. Ideal for LOI (loss on ignition), ashing, calcination, and small-batch heat treatment, electric muffles offer precise PID control, fast ramping, and low maintenance compared with gas furnaces.

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Key Features (What Buyers Care About)

• Temperature range: common models 1100 °C, 1200 °C, 1400 °C, up to 1600–1800 °C for high-temp units.
• Heating elements: FeCrAl (lower temps), SiC/MoSi₂ for higher temp ratings.
• Control: PID controllers with multi-segment ramp/soak; USB/RS-485 logging on advanced units.
• Chamber lining: ceramic fiber for quick heat-up or refractory bricks for longevity at extreme temps.
• Safety: over-temperature limiter, door interlock, cool-touch housing options.
• Ventilation: optional air inlet/exhaust nozzle for LOI/ashing workflows.

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Typical Spec Table (Copy/Modify for Product Page)

Parameter	Typical Range / Option
Max temperature	1100–1800 °C (model dependent)
Chamber volume	1–20 L
Uniformity	±2–10 °C (depends on size & setpoint)
Heat-up rate	5–40 °C/min
Controller	Basic PID / Programmable multi-segment
Thermocouple	Type K / S / B (depending on temp)
Power	110–240 V single phase or 3-phase for larger models
Options	LOI kit, exhaust stack, USB logging, inert purge kit

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Applications (Where Electric Muffle Furnaces Shine)

• LOI and ashing (environmental, food, cement labs)
• Calcination of catalysts, powders, ceramic precursors
• Pre-sintering and burnout for dental or jewelry work
• Thermal analysis sample prep, binder burn-off, moisture removal

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How to Choose (Quick Checklist)

1. Setpoint vs rating: pick a furnace rated above your working temperature.
2. Chamber size: match to batch size; avoid overfilling (leave airflow gaps).
3. Controller needs: do you need multi-recipe/program storage and data export?
4. Exhaust/venting: required for organic burn-off — choose exhaust + fume hood routing.
5. Total cost: factor element replacement, insulation life, energy use, and spare parts lead time.

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Short SOP Snapshot (LOI Example)

1. Dry sample at 105 °C until constant mass.
2. Ramp to 550–600 °C (10–15 °C/min) and hold per method.
3. Cool to ≤200 °C before removal; use desiccator prior to weighing.
4. Repeat until constant mass.

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Troubleshooting (Quick)

• Slow ramp: check mains voltage, aged elements, insulation damage.
• Non-uniform temperature: verify door seal, load spacing, thermocouple placement.
• Element burnout: avoid halide/halogen samples; use lids/trays.

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FAQ (Short)

Q: Are electric muffles suitable for inert atmospheres?
A: Standard models operate in air. For inert gas, choose a gas-purge-capable model or use a tube furnace.

Q: What maintenance is required?
A: Keep chamber clean, inspect/replace elements and thermocouples as needed, calibrate annually for QA.

Model	Max.temperature	Inner volume	Inner size	Power and Voltage
YX-1200-1L	1200℃	1L	105*105*110mm	1KW/AC220V
YX-1200-4.5L	1200℃	4.5L	150*150*200mm	2.5KW/AC220V
YX-1200-7.2L	1200℃	7.2L	200*120*300mm	3KW/AC220V
YX-1200-18L	1200℃	18L	250*250*300mm	5KW/AC220V
YX-1200-36L	1200℃	36L	300*300*400mm	9KW/AC380V
YX-1400-3.6L	1400℃	3.6L	150*150*160mm	4KW/AC220V
YX-1400-8L	1400℃	8L	200*200*200mm	6KW/AC220V
YX-1400-18L	1400℃	18L	250*250*300mm	9KW/AC220V

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