Hot Air Sterilizer - Forced Convection Dry Heat Oven - 30L to 230L - RT+10 to 300°C PID

The Master Science Forced Convection Hot Air Sterilizer is a dry heat unit for laboratories that need to sterilize or heat-treat glassware, metal tools and other heat-resistant items at temperatures up to 300°C. Six models cover chamber volumes from 30 L to 230 L.

Air is circulated horizontally through double air ducts for efficient, uniform heating, and a two-stage PID controller with over-temperature protection holds the set point within ±1°C. With a mirror stainless steel chamber and fan switch, the Master Science Forced Convection Hot Air Sterilizer is easy to clean and adapt to different loads.

Technical Specifications

Technical data of the Master Science Forced Convection Hot Air Sterilizer:

• Brand: Master Science
• Model Number: MSDOF-HAS30ESWISS, MSDOF-HAS45ESWISS, MSDOF-HAS65ESWISS, MSDOF-HAS85ESWISS, MSDOF-HAS125ESWISS, MSDOF-HAS230ESWISS
• SKU: MSDOF-HAS30ESWISS, MSDOF-HAS45ESWISS, MSDOF-HAS65ESWISS, MSDOF-HAS85ESWISS, MSDOF-HAS125ESWISS, MSDOF-HAS230ESWISS
• Brand: Master Science
• Models: MSDOF-HAS30ESWISS (30 L), MSDOF-HAS45ESWISS (45 L), MSDOF-HAS65ESWISS (65 L), MSDOF-HAS85ESWISS (85 L), MSDOF-HAS125ESWISS (125 L), MSDOF-HAS230ESWISS (230 L)
• SKU: MSDOF-HAS30ESWISS, MSDOF-HAS45ESWISS, MSDOF-HAS65ESWISS, MSDOF-HAS85ESWISS, MSDOF-HAS125ESWISS, MSDOF-HAS230ESWISS
• Circulation: Forced convection, horizontal double air ducts
• Temperature Range: RT+10 to 300°C
• Resolution: 0.1°C
• Fluctuation: ±1°C
• Uniformity: ±2.5%
• Inner Chamber: Mirror stainless steel
• Exterior: Cold-rolled steel, electrostatic spray coating
• Insulation: Rock wool board
• Heater: 304 stainless steel
• Controller: Two-stage PID, touch-button setting, dual 4-digit LED display
• Timer: 0 to 9999 min with timing-wait function
• Sensor: Pt100
• Exhaust Hole: Ø35 mm on top (also used as test hole)
• Inner Dimensions (W × L × H): 30 L: 310 × 310 × 310 mm; 45 L: 350 × 350 × 350 mm; 65 L: 400 × 360 × 450 mm; 85 L: 450 × 420 × 450 mm; 125 L: 500 × 450 × 550 mm; 230 L: 600 × 500 × 750 mm
• Power Rating: 0.8 / 1.2 / 1.6 / 2.0 / 2.3 / 3.0 kW
• Max. Shelves: 5 / 6 / 8 / 8 / 11 / 17
• Load per Shelf: 15 kg
• Power Supply: AC 220 V, 50/60 Hz

Key Benefits

• Higher temperature range: Operation up to 300°C covers dry heat sterilization and high-temperature drying.
• Uniform airflow: Double air ducts circulate air horizontally across every shelf.
• Reliable control: PID self-tuning, sensor offset correction and power-off memory keep results consistent.
• Flexible loading: Up to 17 shelves in the largest model, each carrying 15 kg.

For a 250°C model with LCD menu control, see the hot air sterilizer 34L to 188L.

Product Features

Airflow and Heating

• Horizontal circulation through double air ducts
• High-temperature blower motor with fan switch
• 304 stainless steel heater

Controller

• Two-stage PID with over-temperature protection
• Touch-button setting, LED display of set and measured values
• Fixed temperature, timing and auto-stop modes
• Sensor deviation correction and overshoot self-tuning
• Parameter lock and power-off memory

Construction

• Mirror stainless steel inner chamber
• Electrostatically coated cold-rolled steel exterior
• Rock wool insulation
• Anti-scald handle
• Ø35 mm top exhaust hole doubling as test port

Applications

The Master Science Forced Convection Hot Air Sterilizer is suitable for:

• Dry heat sterilization of glassware and metal instruments
• High-temperature drying of samples and containers
• Microbiology and pharmaceutical laboratories
• Material and industrial testing labs
• Hospital and clinical laboratories

Standard Accessories Included

• 2 shelves
• 4 shelf frames

Optional Accessories

• Additional shelves

Problems the Master Science Forced Convection Hot Air Sterilizer Solves

Moisture-sensitive items and high-temperature work call for dry heat. The Master Science Forced Convection Hot Air Sterilizer helps with:

• Cold spots in the chamber: Double-duct forced convection keeps temperature uniform.
• Temperature overshoot: Self-tuning PID control limits overshoot at start-up.
• Lost settings after power cuts: Power-off memory keeps parameters stored.
• Limited shelf space: Large models accept up to 17 shelves.