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hmc@humboldtmfg.com
1.800.544.7220 or fax: 1.708.456.0137

International Orders & Quotes
hmc@humboldtmfg.com
1.708.456.6300 or fax: 1.708.456.5412

General Lab

Muffle Furnaces

Three-Heating-Element Electric Muffle Furnace, H-30200

Three-Heating-Element Electric Muffle Furnace, H-30200

Electric muffle furnaces are designed for laboratory and industrial applications. It is used for engineering tests of soils and aggregates, cement testing, ashing organic and inorganic samples, gravimetric analysis, ignition tests, etc. Cases are welded steel construction; perforated base case design keeps benchtop cool. Heating elements are embedded in refractory cement for structural strength and long life. The furnace is insulated with Insu-Light molded ceramic fiber insulation; a percentage input controller allows desired temperature to be selected with repeatable results. It also features a fluorescent digital display. Each unit contains a Chromel/Alumel thermo-couple directly connected to 32-2200°F, 0-1200°C dual scale
pyrometer.
Unit contains three heating element surfaces, top and both sides. Unit heats up to about 1600°F (871°C) in 40 minutes. Door can be used as a work shelf or be latched in various positions to aid ventilation during burn-out procedures. Includes 3-wire cord and plug.

Digital controller, max temperature: 1904 F (1040 C), chamber and O.D. dimensions (HxWxD): 5x4-1/4x6" (127x108x152mm); 10x14-1/2x11" O.D. (254x368x279mm O.D.)

H-30200, Muffle Furnace 120V, 12.5 amps, 1,500 watts, 50/60 Hz

$1190.00 Add to Order

Three-Heating-Element Electric Muffle Furnace, H-30200.4F

Three-Heating-Element Electric Muffle Furnace, H-30200.4F

Same as above

H-30200.4F, 230V, 6.3 amps, 1,500 watts, 50/60 Hz

$1190.00 Add to Order

Three-Heating-Element Electric Muffle Furnace, H-30201

Three-Heating-Element Electric Muffle Furnace, H-30201

Same as above.
Max temperature: 2192 F (1200 C), chamber and O.D. dimensions (HxWxD): 5x6-1/2x10" (127x165x254mm); 19x13-1/4x27" O.D. (482x336x685mm O.D.)

H-30201, Muffle Furnace 120V, 15 amps, 1,800 watts, 50/60 Hz

$2000.00 Add to Order

Three-Heating-Element Electric Muffle Furnace, H-30201.4F

Three-Heating-Element Electric Muffle Furnace, H-30201.4F

Same as above.

H-30201. Muffle Furnace 4F, 240V, 7.5 amps, 1,800 watts, 50/60 Hz

$2000.00 Add to Order

Electric Furnace with Single Setpoint Automatic Controller, H-30202

Electric Furnace with Single Setpoint Automatic Controller, H-30202

Small bench-type muffle furnace has heating elements on both
sides of chamber. Unit has high thermal-efficient ceramic insulation surrounding the chamber. Maximum operating temperature is 1904°F (1046°C). Door safety interlock disconnects power to heating elements when door is open. Temperature controller is open loop manual-control type. Temperature is measured by thermocouple and displayed on analog meter. Includes ceramic shelf and 3/8” port at rear for injection of atmospheres. Chamber dimensions: 5x4-1/2x6”D
(12x11x33cm).

Single Setpoint Automatic controller, max temperature: 1904 F, (1040 C), chamber and O.D. dimensions (HxWxD): 5x5-1/2x13" (127x139x330mm); 26-1/2x15-1/2x24" (673x381x610mm)

H-30202, Muffle Furnace 120V, 35 amps, 4,100 watts, 50/60 Hz

$5500.00 Add to Order

Electric Furnace with Single Setpoint Automatic Controller,

Electric Furnace with Single Setpoint Automatic Controller,

Same as above.

H-30202.4F, Muffle Furnace 240V, 17.5 amps, 4,100 watts, 50/60 Hz

$5500.00 Add to Order

Medium Muffle Furnace, H-30204.4F

Medium Muffle Furnace, H-30204.4F

Heating elements on top, bottom and sides, and set in refractory cement increase temperature uniformity. High-efficiency ceramic insulation around chamber maximizes energy efficiency. Features top venting; door safety switch cuts power when door is open. Manual models have dual-scale analog meter. Automatic models feature digital temperature display. Pre-punched ports at rear of furnace
allow atmosphere injection; order connection tubing separately. Stainless-steel shelf is optional. H-30204.4F includes cord and plug.

Digital controller, max temperature: 1904 F (1040 C), chamber and O.D. dimensions (HxWxD): 12.75x10x6.8" (325x254x172mm) 12.1x29.5x21" O.D. (485x749x533mm O.D.)

H-30204.4F, Muffle Furnace 230V, 10.0 amps, 2,400 watts, 50/60 Hz

$2560.00 Add to Order

Medium Muffle Furnace, H-30206.4F

Medium Muffle Furnace, H-30206.4F

Same as above.
Single Setpoint Automatic controller

H-30206.4F, Muffle Furnace 230V, 22.9 amps, 5,500 watts, 50/60 Hz

$5300.00 Add to Order

Programmable Ashing Furnace, H-30208.4F

Programmable Ashing Furnace, H-30208.4F

With 14x14x14"chamber, furnace has 1.6 cu. ft. (2,744 cu. in.) of heating area. Unit features high-efficiency ceramic insulation and heating elements on sides, top and bottom of chamber to achieve minimum chamber temperature gradient. Door safety switch cuts power when door is open. Includes two refractory shelves, 1” dia. top vent and 35-amp circuit breaker to protect unit. Prepunched ports at rear of furnace allow atmosphere injection; order connection tubing separately.

Single Setpoint Automatic controller, max temperature: 1999 F (1093 C), chamber and O.D. dimensions (HxWxD): 14x14x14" ( 355x355x355mm) 25.5x21.5x29.5" O.D. (647x546x749mm O.D.)

H-30208.4F, Muffle Furnace 230V, 22.9 amps, 5,500 watts, 50/60 Hz

$6800.00 Add to Order