1.9 Cu Ft Vacuum Drying Oven, 50-200℃ Temperature Control Digital Vacuum Oven

The HQHAOTWU 1.9 Cu Ft Vacuum Drying Oven provides controlled thermal processing for laboratories in enterprises, schools, and research institutions. Operating under vacuum conditions below 133Pa, it is designed for rapid drying and heating of heat-sensitive, easily decomposed, and easily oxidized substances. Its 1.9 cubic foot interior accommodates delicate samples that require moisture removal without direct atmospheric exposure.

Thermal management is handled by an intelligent digital system paired with a clear LCD display. The unit spans a temperature range of 50 to 200℃ while keeping fluctuations to ±1℃. A bidirectional convective circulation system with double partition boards circulates air evenly across each shelf layer. For process control, the interface includes a dwelling timer programmable from 1 to 9999 minutes, intelligent temperature correction, and an overtemperature alarm.

The build centers on a 304 stainless steel chamber measuring 16.14 by 14.57 by 13.58 inches, equipped with two shelves to organize batches. To preserve vacuum levels, the door features a thickened high-temperature silicone sealing ring that seals tightly against the chamber. Monitoring is handled via an integrated silicone oil vacuum pressure gauge designed for stable, precise readings.

Before purchasing, keep in mind that this unit requires 110V power and draws 1400W. It is designed to work with a matching vacuum pump that has a 2L pumping rate, but the pump itself is not included. Additionally, the lowest possible temperature setting is 50℃, which may not suit low-temperature thermal applications below that threshold.

Verdict: The HQHAOTWU 1.9 Cu Ft Vacuum Drying Oven is a solid choice for educational, industrial, and scientific labs needing precise temperature stability and reliable vacuum sealing for sensitive compounds. Ensure you have a compatible 2L vacuum pump ready to complete your setup.

• Capacity: 1.9 Cu Ft
• Chamber Dimensions: 410 x 370 x 345 mm (16.14 x 14.57 x 13.58 in)
• Chamber Material: 304 Stainless Steel
• Temperature Range: 50 to 200℃
• Temperature Fluctuation: ±1℃
• Vacuum Degree: <133Pa
• Timer Range: 1 to 9999 minutes
• Voltage: 110V
• Power: 1400W
• Shelf Count: 2
• Matching Pump Rate: 2L

A great fit if you:

• Need to dry heat-sensitive, easily oxidized, or complex chemical compounds under vacuum.
• Work in an academic, commercial, or institutional laboratory setting.
• Require long, unattended drying runs with automated timing up to 9999 minutes.
• Value the corrosion resistance and cleanliness of a 304 stainless steel interior.

Consider something else if you:

• Need a ready-to-run package that includes an integrated vacuum pump.
• Require drying temperatures below 50℃.
• Operate on higher-voltage 220V electrical circuits.

What vacuum pump specifications are needed for this oven?
The oven is designed to match a vacuum pump with a pumping rate of 2L to reach its vacuum degree rating of under 133Pa.

What are the internal dimensions of the drying chamber?
The 304 stainless steel chamber measures 410 by 370 by 345 mm, or approximately 16.14 by 14.57 by 13.58 inches, and contains two shelves.

What safety and monitoring features are built in?
It includes an intelligent overtemperature alarm, automatic temperature correction, a silicone oil vacuum pressure gauge, and an LCD control panel.

What is the maximum run time for the timer?
The dwelling timer can be set for any duration between 1 and 9999 minutes.