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COLO.Science · Heating & Thermal Processing · Laboratory Drying Oven
DRYSA Natural Convection Drying Oven · LED Controller · 30 to 125 L · up to 300 °C
The DRYSA natural convection drying oven dries, heats and sterilises glassware and samples from 10 °C above room temperature up to 300 °C. There is no fan: the warm air rises by itself, so powders and light samples are not disturbed, and a PID controller with LED display holds the set temperature. Five sizes share the same functions: 30 L (PRO3364), 45 L (PRO3365), 65 L (PRO3366), 85 L (PRO3367) and 125 L (PRO3368).
Drying ovens · choose the series
DRYSA models and order codes
| Model | Order code | Chamber volume | Inner chamber W × D × H | Exterior W × D × H | Heating power |
|---|---|---|---|---|---|
| DRYSA30 | PRO3364 | 30 L | 310 × 310 × 310 mm | 450 × 510 × 695 mm | 0.8 kW |
| DRYSA45 | PRO3365 | 45 L | 350 × 350 × 350 mm | 500 × 550 × 735 mm | 1.2 kW |
| DRYSA65 | PRO3366 | 65 L | 400 × 360 × 450 mm | 550 × 550 × 840 mm | 1.6 kW |
| DRYSA85 | PRO3367 | 85 L | 450 × 420 × 450 mm | 590 × 610 × 830 mm | 2.0 kW |
| DRYSA125 | PRO3368 | 125 L | 500 × 450 × 550 mm | 636 × 680 × 915 mm | 2.5 kW |
Every DRYSA natural convection drying oven has the same controller and stainless-steel chamber; the five sizes differ in chamber size and heating power. Not sure which size you need? Send us what you dry and how much per run, and we will propose the model.
Natural convection drying oven with LED controller and timer
In the DRYSA natural convection drying oven the warm air rises from the heater through the chamber by itself. There is no fan, so the oven is quiet and does not disturb powders and light samples. The LED display shows the measured temperature on the upper row and the setpoint on the lower row. The timer runs from 0 to 9999 minutes.
Key features
- Temperature RT+10 °C to 300 °C, resolution 0.1 °C
- Natural convection, no fan
- PID controller with LED display and timer 0–9999 min
- Over-temperature protection
- Mirror stainless-steel chamber, 2 shelves supplied
Suitable for
- Drying glassware, powders, soil, food and other samples
- A natural convection drying oven for drying to constant mass, for example at 105 °C
- Hot-air sterilisation of glass and metal items
- Heat treatment, ageing and curing tests up to 300 °C
Natural convection or forced air?
Without a fan the air moves slowly, so light powders stay in place and the samples are not dried out by an air stream. A natural convection drying oven is also quiet and simple. It suits glassware, small series and samples that must not be disturbed. The oven needs no special installation: a level bench and an earthed socket are enough.
With a full chamber or wet loads a fan heats and dries faster and more evenly; for that see the DRYSD series or the laboratory drying ovens overview .
Technical specifications
Temperature and control
| Air circulation | natural convection, no fan |
| Temperature range | RT+10 °C to 300 °C |
| Resolution | 0.1 °C |
| Temperature fluctuation | ±1 °C |
| Temperature uniformity | ±3.5 % |
| Control | PID controller, LED display, keys |
| Timer | 0–9999 min, with timing-wait function |
| Sensor | Pt100 |
Chamber, housing and supply
| Chamber | mirror stainless steel |
| Housing | cold-rolled steel, powder-coated |
| Shelves | 2 supplied; 15 kg per shelf |
| Exhaust port | Ø 28 mm on top, also usable as a test hole |
| Protection | over-temperature protection |
| Supply | 220 V, 50/60 Hz; 110 V on request |
| Insulation | silicate insulation board |
The setpoint must be at least 10 °C above room temperature. Shelf positions are 35 mm apart.
Operating functions
PID controller with LED display
The PID controller holds the set temperature and corrects itself by self-tuning. Settings are kept after a power cut, and the parameters can be locked.
Timer and protection
Set the timer from 0 to 9999 minutes; the oven stops heating at the end of the set time. Over-temperature protection is built in. Do not dry flammable, explosive or solvent-containing materials.
Sizes
The natural convection drying oven is available in five chamber sizes, from 30 to 125 L, with the same functions. For an 18 L unit see the DRYSA18 dry sterilizer. Two shelves are supplied with every oven and further shelves can be ordered.
Construction, installation and care
The chamber is mirror stainless steel and the housing is powder-coated cold-rolled steel. Place the oven level, with free space around it and around the exhaust port, and connect it to an earthed socket. Clean it cold, with neutral detergent and a dry cloth; do not use acids or alkalis.
Standard delivery
- DRYSA natural convection drying oven in the chosen size, with 2 shelves.
The configuration for a specific order is the one confirmed in the COLO.Science quotation.
Technical documents and knowledge base
DRYSA technical specification (PDF) — all five sizes, specifications and configuration checklist. Methods and applications are explained in our knowledge base.
Drying oven series compared
COLO.Science drying ovens differ in air circulation, controller, maximum temperature and size. The DRYSA natural convection drying oven is the quiet choice for glassware, powders and small series.
| Series | Air circulation | Controller | Max. temperature | Chamber volume |
|---|---|---|---|---|
| DRYSA18 | natural convection | LED | 300 °C | 18 L |
| DRYSA (this page) | natural convection | LED | 300 °C | 30–125 L |
| DRYSB | natural convection | LCD, temperature limiter | 300 °C | 30–125 L |
| DRYSD | forced air | LED | 300 °C | 30–625 L |
| DRYSE | forced air | LCD, adjustable fan, temperature limiter | 300 °C | 30–230 L |
| DRYSC | forced air, low, wide housing | LED | 250 °C | 43–225 L |
| DRYSCN | natural convection, low, wide housing | LED | 250 °C | 43–225 L |
| DRYBF | forced air | LED | 250–300 °C | 640–3070 L |
Vacuum drying ovens: DRYVA, DRYVE and DRYVH series, 25 to 215 L.
How to choose
- 30–45 L — small bench-top ovens for glassware and a few samples.
- 65–85 L — daily drying in a routine laboratory.
- 125 L — the largest chamber of the series, for larger loads.
- 18 L — for instruments and very small loads see the DRYSA18 dry sterilizer.
- A fan or another controller? See the laboratory drying ovens overview .
Configuration note
To choose a natural convection drying oven, tell us what you dry, the load per run and your working temperature. COLO.Science will confirm the model in the quotation.
Sales and support for international customers
COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.
