Questron Technologies Corporation

- Model QWave Series - Close Vessel Microwave Digestion System



Ideal for both Open as well as Closed Vessel Digestion, Extraction, Evaporation, and Synthesis. Built-in temperature and pressure monitoring of each digestion vessel. User-independent safety features ensuring safe digestions. Enhanced safety using real time video. 7” LCD Display. Maximum 1800 W microwave energy. Maximum 230℃ digestion temperature. Pre-loaded EPA 3015, 3051, 3052 and other digestion method. Controlled release of over pressure to avoid cross-contamination. Rotating antenna and 360° carousel rotation ensuring uniform microwave distribution. Corrosion-proof PTFE-coated reinforced cavity for corrosion resistance. Microwave power output in small increments for precise temperature Control. 2450 MHz magnetron frequency. 150 CFM exhaust for fume removal and vessel cooling. Spring-loaded door latches for enhanced safety. 56 litres Cavity Volume.

  • Time-to-Power control mode, with choice of 4 power levels
  • Easy operation using user-friendly control panel with tactile membrane switches
  • Best suited for proven digestion methods
  • Pressure monitoring for each vessel for safe operation
  • Stand alone operations
  • Selection of digestion vessels to cover wide spectrum of applications
  • Rotating antenna & carousel, and unique cavity design ensures uniform microwave distribution
  • 150 CFM exhaust for fumes removal and vessels cooling
  • Corrosion-proof PTFE-coated reinforced cavity
  • Ideal for digestion, extraction, evaporation and synthesis

  • Multi-layered explosion-proof oven door
  • Rugged and fortified oven body guarantees operator safety in the worst scenarios
  • Spring-loaded door latches for enhanced safety
  • OPGuard pressure protection mechanism safely vents over pressurised vessel. The mechanism safely directs the vessels contents out to the fume hood via the oven exhaust ducting and automatically shuts down microwave power

Traditional open-beaker dissolution for sample preparation is an antiquated method susceptible to biases—primarily through contamination of the sample. However, with the advent of computer technology and ever-refi ned uses of microwave energy as a heat source, the time savings and sophistication level of sample preparation is approaching that of instrumental analysis. Our QWAVE 1000 offers an affordable and safe way to perform microwave digestion – incorporating the same oven and the same rugged and laboratory-tested vessel sets (UHP, VHP, or LVHP vessel types) as our more expensive and higher-end systems. If you need a laboratory-grade microwave system for the digestion of moderately demanding samples with pre-tried and tested methodologies that require timed power to be applied to your samples, then QWAVE 1000 is all you need. Typically, these kinds of digestions are processed with application of timed power only.

QWAVE 1000 Closed-vessel microwave decomposition offers the following benefits:

  • The environment in which the reaction takes place is clean, closed, and controlled
  • The amount of acid is diminished to stoichiometric quantities of the reagents, reducing contamination to a minimum
  • ppb, ppt level sensitivities
  • Shorter reaction time and improved digestion due to higher temperatures (far above the normal boiling point of the reagents)
  • No loss of volatile elements

  • Spring-loaded door latch provides a simple and effective safety shield
  • Door safety interlocks
  • PTFE-coated reinforced cavity
  • Newly designed vessels with OPGuard Vessel Protection System
  • User-friendly control panel with tactile membrane switches
  • Better and brighter LED display
  • Easily accessible electronics and serviceable modules

At Questron, we pay utmost attention to the issues of safety, productivity, and product functionality. During the time of product defi nition and product development, our engineers and scientists constantly think of the end users and how they are likely to use the product. The end result of all this is an instrument that is easy to use and easy to maintain – an instrument that works hard for its owner.

An example of this design approach are our layered safety features. As a protection against unforeseen events, such as out-of-limit pressure buildup in sample vessels due to some unexpected sample reaction, our fi rst line of defense is our extra strong and proven vessels. All our vessel sets are conservatively rated and can withstand short-time pressure spikes that are well above the normal working range. In parallel to this, any out-of-limit pressure buildup causes our OPGuard™ mechanism to come to rescue. It automatically causes the effected vessel to vent – safely and reliably. In such an event, all microwave power is stopped and a beeper sounds, warning the user to the extraordinary condition. A rugged and powerful exhaust system rapidly removes any purged acid fumes from the cavity to the exhaust duct. Finally, if all else fails, our next line of defense, a mechanically strong and conservatively specifi ed oven body, safeguards individual safety and undue damage to nearby instruments. Its rugged frame and intelligent design provides uncompromising protection under the worst imaginable scenarios.

  • Oven
    • Microwave power output Up to 1200 Watts
    • Magnetron frequency 2450 MHz
    • Utilities
      • 208 VAC, 60 Hz, 20 Amps
      • 220 VAC, 50 Hz, 20 Amps
      • Exhaust 150 CFM
    • Display High brightness LED
    • Dimensions (width x depth x height)
      • External 58 x 61 x 64 cm (23 x 24 x 25.5 in.)
      • Cavity 39 x 34 x 30.5 cm (15 x 13.5 x 12 in.)
    • Weight 75 kg. (165 lbs.)
  • Vessels Module
    • Supported vessels UHP, VHP and LVHP
    • Maximum samples 10 (UHP & VHP) and 30 (LVHP)

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