Page 18 - Catalog Instruments and Supplies

18 SCP SCIENCE WHAT DO YOU WANT TO DIGEST?
Digestion & Evaporation Systems
HOW ARE YOU PREPARING YOUR
Method Development Guide SAMPLE NOW?
SLIGHTLY REACTIVE samPLES
HOW REACTIVE ARE YOUR
METHOD SAMPLES?
DEVELOPMENT
HOW MANY SAMPLES DO YOU HAVE?
GUIDE
Slightly Non
Highly Reactive Reactive
Reactive Samples Samples
Samples

SLIGHTLY REACTIVE EXAMPLES Choose Acid Combination
- Partial Digestion (E.P.A. 3050B)
i.e. Plant (low organic content),

sludges, soil sample

PlasmaPURE HCl Acid PlasmaPURE HNO3 Acid PlasmaPURE HNO3/HCl Acids
- Strong non-oxidizing mineral acid - Strong oxidizing mineral acid - Very strong oxidizing media
- Sample digested between 80°C and 120°C - Reacts upon mixing - forms brown fumes upon mixing
- Sample should be below 80°C - DigiTUBEs, Watch Glasses - Samples should be digested between 95°C and 110°C
- DigiTUBE, Glass, or Quartz sample - DigiTUBE, Glass, or Quartz sample tubes, Watch Glasses

tubes, Watch Glasses

Below 2 grams Add H202: - Strong oxidizing solution
Add up to 10 ml acid - Cool to room temperature before
adding peroxide
System Used: DigiPREP MS, Jr., LS, h, MINI &
DigiVAC* Reheat Sample

- Below 95°C - Ramp to temperature

Digest Sample Filter Sample
* May only be used with DigiPREP MS

Digestion
Complete

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