Microwave Sample Prep

By Lab Manager Magazine

Top 5 Signs That You Should Service or Replace Your Microwave Digester

Corrosion is visible inside the cavity—this compromises the integrity of the cavity, may cause arching, and can cause microwave leakage.
Strange noises—Trust your ears, if you hear something that is not normal then it’s probably not and should be investigated.
Poor results—If you get poor results from a proven method.
Temperature not following program—If your unit cannot follow a program as it has in the past, this could be a sign of low power output and should be checked by a service professional.
Not heating—If your unit is not able to heat even a few hundred mL of water, then it should be serviced by a trained professional.

Top 5 Questions You Should Ask When Buying a Microwave Sample Preparation System

What is the system’s maximum microwave power output? Microwave energy heats substances quickly to high temperatures. The higher the temperature, the faster and more completely substances are digested. Extractions also need sufficient power, as some solvents can act as a heat sink and are difficult to heat.
Can the system monitor and control every vessel? Temperature and pressure monitoring and control are extremely important. Inadequate safeguards can result in damaged vessels and equipment, and a lack of temperature and pressure control can pose a safety hazard to lab personnel.
How many samples can be processed per run? Though the number of samples processed is dependent upon your laboratory’s needs, planning for growth is always a good idea.
Does the company offer free applications support? Do they offer dedicated, direct service support and local factory-trained field service technicians? Dependable applications and service support are essential since you never know what may go wrong.
How user-friendly is the system? As with many instruments, if a system is very complicated to operate, it generally becomes either a glorified shelf to store things on or a headache to those having to operate it. The easier a microwave system is to use, the better off you will be. Also make sure the vessels are easy to handle and set up.

Recently Released Microwave Sample Prep products

UltraWAVE Microwave Digestion System

  • Features Milestone’s unique SRC technology in a fully automated benchtop package
  • Brings greater efficiency to microwave digestion, using disposable glass vials instead of traditional digestion vessels
  • Reduces digestion acid volume, lowering digestion blanks
  • Results in more complete digestions, and better analytical data quality for ICP-MS analysis
  • Digests up to 15 samples—of any matrix—simultaneously


Multiwave GOMultiwave GO Microwave Digestion System

  • Newly designed DMC Directed Multimode Cavity provides the best of both monomode and multimode microwaves
  • Due to the TURBO Cooling process, unique cooling times as short as 8 minutes for a fully loaded twelve-position rotor are possible
  • SMART VENT technology enables precise pressure control in each vessel

Anton Paar

Discover SP-D 80 Acid Digestion System

  • Allows users to perform acid digestion for trace metals analysis in as little as ten minutes, including cool down
  • Especially suited to laboratories that need immediate turnaround
  • Handles larger sample volumes of 1-2 grams and features full pressure and temperature control of every sample
  • Capable of temperatures up to 260°C and can accommodate a variety of different samples


TOPEX Microwave Digestion System

  • Dual magnetron staggered resonance arrangement maintains non-pulsed continuous microwave output throughout the power range (0-1800W)
  • Two kinds of safety mechanisms include positive safety and passive safety
  • Includes high frequency closed loop feedback microwave control mode
  • Features larger 56L volume of cavity, 316-L stainless steel, which is compatible with different rotors and a variety of other benefits


Microwave Sample Prep Product Manufacturers

Anton Paar www.anton-paar.com

Biotage www.biotage.com

Buck Scientific www.bucksci.com

CEM www.cem.com

Milestone www.milestonesci.com

PreeKem www.preekem.com

SCP Science www.scpscience.com

Categories: Lab Products

Published In

2013/2014 Product Resource Guide Magazine Issue Cover
2013/2014 Product Resource Guide

Published: August 9, 2013

Cover Story