University and research labs — sterilized glassware for media and culture work
Flasks and pipettes dry, sterile and ready
160°C / 2h — 180°C / 30min hot air sterilization
Dry Heat Sterilizers
A dry heat sterilizer kills with heat alone: hot air at 160°C for two hours, or 180°C for thirty minutes, raises the temperature of bacteria, spores and viruses past their protein-failure point with no steam, no chemicals and no moisture-sensitive residue. It is the method of choice for glassware, metal instruments, oils, powders and anything an autoclave would rust, wet or spoil. The WSHLab RDS dry heat sterilization oven is a hot air sterilizer built on our 304-stainless forced air platform: 70L, 136L and 210L chambers, up to 250°C, ±1°C uniformity at 100°C, and a digital timer with hold plus over-temperature alarm. The convection loop is sized for the long dwell times that sterilization demands — every item in the load spends the full cycle at temperature, not just the shelf near the sensor. Regulated and clinical sites should note the division of labour: dry heat for glassware, instruments and heat-stable materials; steam for wrapped fabric and rubber. The comparison below helps you decide which loads belong in which machine.
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WSHLAB Dry Heat Sterilization Oven
- Model range
- RDS-70 / 136 / 210
- Capacity options
- 70L · 136L · 210L
- Temperature range
- RT+10°C to 250°C
- Fluctuation
- ±1°C at 100°C
Price on request
TECHNICAL DATA
Inside the RDS dry heat sterilizer
A 304 stainless forced-convection chamber tuned for long dwell cycles: PID control, timer with hold, over-temperature alarm and a door window for observation without breaking the cycle.
Dry Heat Sterilizers
View ProductWSHLAB Dry Heat Sterilization Oven
- Model range
- RDS-70 / 136 / 210
- Capacity options
- 70L · 136L · 210L
- Temperature range
- RT+10°C to 250°C
- Fluctuation
- ±1°C at 100°C
- Controller
- Digital PID with timer-with-hold, over-temp alarm, cycle-end buzzer
- Chamber
- 304 stainless steel, rounded corners
- Sterilization cycles
- 160°C / 2 h and 180°C / 30 min; engineering cycle to 250°C
- Shelves
- 2 standard, adjustable spacing
- Door
- Double-layer tempered glass window, silicone seal, latch handle
- Power
- 220V 50/60Hz; 110V available on request
- Certification
- CE, ISO 9001, RoHS
- Heating Method
- Forced Air
- Capacity
- 136L · 210L · 70L
- Voltage
- 220V/50Hz
- Chamber Material
- 304 Stainless
- Control Type
- LED Digital
- Max Temperature
- 250°C
Applications
Where dry heat sterilization is the right answer
Clinical, dental and research loads that steam would rust, wet or spoil.
Dental clinics — burs, forceps and handpiece accessories
180°C/30min loop between patients
Hospital CSSD support — heat-stable instruments and trays
Over-temp alarm and cycle-end buzzer for busy rooms
Pharmacy and formulation — powders and oily preparations
The only correct method for moisture-sensitive material
PERFORMANCE & SELECTION
What is a dry heat sterilizer?
A dry heat oven sterilizer is a forced convection chamber engineered to hold a sterilization temperature across a full load for a validated time. The classic cycles are 160°C for 2 hours and 180°C for 30 minutes. Because there is no moisture, the process is ideal for borosilicate glassware, surgical instruments, powders and oily preparations that steam would spoil.
- Working range to 250°C; sterilization cycles 160°C/2h and 180°C/30min
- ±1°C fluctuation at 100°C — every item spends the full cycle at temperature
- Digital timer with hold, over-temperature alarm and cycle-end buzzer
- 304 stainless chamber, rounded corners, easy to keep sterile-clean
CONFIGURATION & COMPATIBILITY
Glassware and instrument sterilization
The RDS is first a glassware sterilizer: flasks, beakers, pipettes and petri dishes come out dry, sterile and ready to use — no drying step, no water spots, no autoclave tape residue. As an instrument sterilizer it handles forceps, scissors and burs that would dull or rust in steam.
- Flasks, beakers and pipettes — dry, sterile, ready for media work
- Surgical instruments, forceps, scissors, burs and metal tools
- Powders, oils and petrolatum preparations steam would spoil
- Laboratory sterilizer duties: emptied glassware between experiments
IDENTIFICATION & TRACEABILITY
Clear Product Identification & Specification
Product names, model numbers, SKUs and option identifiers keep quotations, orders and internal records aligned.
- Product and model identification
- Option-specific SKU information
- Consistent quotation specifications
PRODUCT IDENTIFICATIONDry Heat Sterilizers
- Catalog
- Laboratory equipment
- Products
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- Selection
- Specification-led
Traceability
Traceability from sensor to serial number
The 180°C verification record is filed against the sterilizer's serial number, and calibration certificates are available for clinical documentation packs.
- Factory sterilization-cycle report by serial number
- Annual recalibration service with certificate
- IQ/OQ protocol available for regulated facilities
Quality system
Quality system and factory testing
Every RDS runs a documented 180°C cycle with a nine-point load check before shipping — uniformity you can file, not just feel.
CE marked, built under ISO 9001
Loaded 180°C cycle with multi-point verification per unit
Timer, hold, alarm and buzzer functions tested end-to-end
PT100 sensor verified against a reference thermometer
Why WSHLab
Why facilities choose the RDS platform
It is a drying oven that knows it is a sterilizer: every control function is built around validated cycles.
Timer with hold keeps the load at temperature for the full dwell time
Over-temperature alarm and cycle-end buzzer on independent circuits
304 stainless chamber, rounded corners — sterilization-grade cleanability
Double-layer glass window for mid-cycle observation
Dual-purpose: doubles as a general-purpose drying oven between cycles
OPTIONS & SPECIFICATIONS
Dry Heat Sterilizers Options & Specifications
Choose the format that suits your application, workload and handling requirements.
Validated cycle time and temperature
Uniformity across the load
Chamber alloy for repeated sterilization
Timer with hold, alarm and cycle end signal
What you may and may not sterilize dry
| Type | Capacity / Option | Material / Specification | Suitable Application | Storage / Handling |
|---|---|---|---|---|
| Validated cycle time and temperature | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| Uniformity across the load | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| Chamber alloy for repeated sterilization | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| Timer with hold, alarm and cycle end signal | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
| What you may and may not sterilize dry | By selected product | Product-specific configuration | Confirm with our team | Follow product guidance |
Delivery and site
Delivery, installation and commissioning
Benchtop models unpack onto a bench and plug in; the first documented cycle is part of commissioning, not an afterthought.
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Wooden crate with foam protection; glass window clamped for transit
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220V 50/60Hz standard, 110V on request
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Allow 10-15 cm rear clearance for convection
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First validated cycle documented in the handover sheet
RECOMMENDATIONS
Related Products
Products frequently compared within this catalog.
Gallery
RDS build details
Chamber, controls and cycle functions of the sterilizer series.
VIDEOS
Manufacturing & Quality Process
Category video library
Add category-specific video covers, titles, durations and video URLs in the Videos ACF section.
QUESTIONS & ANSWERS
Dry Heat Sterilizers: frequently asked questions
The questions buyers ask most often when specifying Dry Heat Sterilizers, answered by our technical team.
What temperature and time does dry heat sterilization need?
The standard cycles are 160°C for 2 hours or 180°C for 30 minutes. The timer starts when the load reaches temperature; the RDS timer-with-hold function keeps the chamber at setpoint for the full dwell.
Can it sterilize glassware?
Yes — that is its primary duty. Flasks, beakers and pipettes come out dry, sterile and spot-free, with no drying step and no autoclave residue.
Is a dry heat sterilizer different from an autoclave?
Yes. Dry heat uses hot air and no moisture, so it suits glassware, metals, powders and oils that steam would rust, wet or spoil. Autoclaves are faster for wrapped kits and fabrics — most facilities use both.
What sizes are available?
The RDS series offers 70L, 136L and 210L chambers — benchtop footprint at the smaller end, with shelving for full instrument trays at the top.
Does it have a timer and alarm?
Yes: a digital timer with hold, an over-temperature alarm on an independent circuit, and a cycle-end buzzer so the load comes out the moment it is done.
Get a quotation
Specify your sterilizer with an engineer
Tell us the loads you sterilize, the cycles your protocol requires and the space you have. We will confirm the size, documentation and lead time.