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Drying

Energy efficient drying ovens with maximum durability

Dry samples efficiently and effectively with our range of drying solutions. Robust, highly productive and energy efficient, our drying equipment is suitable for a range of applications – including large volumes and wet and sticky sample materials. Whichever solution you choose will deliver straightforward, even heating.

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Key benefits of sample drying ovens

  • Fast drying times

    Our DO series drying ovens’ thermal efficiency results in fast drying times. Their insulated walls, 5 mm steel plate floor, and positive door closure and sealing ability contribute to their efficiency. Our RD series feature innovative heating technology that promotes the faster drying of samples. This includes the use of overhead heating infrared lamps coupled with hotplates that heat the sample from underneath. Additionally, our rotary dryer keeps samples moving, with a more constant heat profile through the sample and a very quick drying result.

  • Energy efficient heating

    Our RD series drying ovens’ uses infrared heating technology, which is more energy efficient than other forms of heating, saving on energy use and energy costs. The infrared heating technology can be directed and concentrated on irradiating and heating just the sample. This means energy is not wasted heating the space around the sample.

  • Simple, reliable operation

    Intuitive controllers and easy-to-read temperature displays make the DO series ovens easy for operators to use and ensure precise temperature control. Optional extras, such as a web interface, improve the quality of reports and real-time data better informs decision making. Ergonomic trolleys are easy to manoeuvre and limit the need to manually lift samples. Ovens are designed for quick and trouble-free loading and unloading, minimising heat loss and reducing the spillage of hot air into the work environment.

Electric drying ovens

Essa® DO1

The Essa DO1 Drying Oven is a reliable, compact machine that is suited to standard mineral laboratory settings. It is a small but powerful, cost-effective and efficient oven that delivers accurate and precise results. The oven has a corrosion-resistant stainless-steel lining and is insulated with fibreglass. It also has a 5 mm steel-plate door and a positive door closure ensuring thermal consistency.

The efficient and durable design can reach temperatures of up to 120°C with a recommended operating temperature of 105°C. Total shelf area of the trolley is 4.5 square metres.

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Infrared drying ovens

Essa® RD10

Our Essa® RD10 Infrared Drying Oven is a tray dryer offering quick drying of wet samples using overhead infrared heat lamps. It suits samples sized up to 8 kg. Advanced technology monitors the sample’s surface temperature to within the pre-set temperature range to ensure precise results and distribution of heat within the sample.

Compare sample drying ovens

Drying method, sample size, automation and additional features

Forced air convection drying
✓
✓
Infrared drying
X
X
Additional hotplate heating
X
X
Sample size
Varies
Varies
Built in loadcell and auto stop functionality
X
X
Automation integration capability
X
X

Downloads for sample drying ovens

Frequently asked questions

FAQs for sample drying ovens

Sample drying is the process of removing moisture from a sample. This is often a crucial and first step in sample preparation for various analytical techniques.

The drying process can vary depending on the nature of the sample and the desired level of dryness. However, it typically involves exposing the sample to heat, air flow, or a combination of both. This causes the water molecules in the sample to evaporate, leaving behind the dried material.

Geochemists dry samples before sample preparation and analysis for several important reasons:

•    Removal of Moisture: Drying eliminates water content that may be present in soil, sediment, or rock samples. This is essential because moisture can interfere with accurate measurements, particularly in techniques where weight, mass, or concentration are calculated.

•    Consistency in Weight and Composition: Drying ensures that the sample's mass remains stable. Moisture content can vary between samples, leading to inconsistent weight and volume, which affects the reproducibility and accuracy of quantitative results.

•    Prevention of Chemical Reactions: Water can facilitate unwanted chemical reactions, such as oxidation, hydrolysis, or leaching of certain elements. Drying prevents these reactions, preserving the sample’s chemical integrity.

•    Improved Homogeneity: Drying can make the sample easier to grind into a fine, homogeneous powder, which is critical for obtaining representative subsamples and ensuring even distribution of elements during analysis.

•    Better Analytical Performance: Many analytical techniques, such as X-ray fluorescence (XRF), inductively coupled plasma mass spectrometry (ICP-MS), and others, require samples to be in a dry, powder form. Wet samples can cause equipment blockages, signal interference, or degraded measurement accuracy.

•    Drying is, therefore, a fundamental step to ensure precision, consistency, and accuracy in geochemical analysis.