1. Environmental Express Webinar HotBlock Systems – Precision Heat with Various Uses 12/08/15

2. Decades of Digestions – 1970s  Hot plate  Fume hood  Gloves  Safety glasses

3.  Hot plate  Fume hood  Gloves  Safety glasses  Lab coat Decades of Digestions – 1980s

4.  Sample contamination  Safety  Accuracy  Absence of uniform heating  Transfer steps Problems with Early Digestion Procedures

5. Decades of Digestions – 1990s  Digestion methods improve  Environmental Express introduces HotBlock TM Digestion Systems

6.  Metals-free construction eliminates contamination source  Temperature uniformity results in time-based digestions vs. volume-based digestions  Samples of similar matrices finish digesting at the same time  Single use digestion supplies eliminate glassware, sample transfer steps, and multiple contamination sources Benefits of Using HotBlock™ Digestion Systems

7.  Teflon ® -coated graphite block provides uniform heating  Kydex ® housing is fire- resistant and acid-resistant Benefits of Using HotBlock™ Construction

8.  Silicone heating mat evenly applies heat for temperature uniformity  Easy-to-use controller allows for precise temperature control Benefits of Using HotBlock™ Construction

9. HotBlock  Most basic application is heated digestion of samples  Metals digestions  ‘Block Digesters’ are specifically mentioned in 200.2, 200.5, 200.7, and 200.8

10. HotBlock  Other digestions  Phosphorous – 365.1  Cr 6+ - 3060A/7196A  Nitrogen – Alkaline persulfate digestions SM4500N-C  Mercury – 245.1

11. HotBlock – Industrial Hygiene  GhostWipe  Lead and Beryllium  Method requires ‘rigid walled container’ for transport

12.  Some methods require stirring or agitation while heating  HotBlock & StirBase allow for multiple samples to be heated and stirred at once  Hexavalent Chromium by SW846 3060A  ASTM F963 – Lead in toys Stirring Capabilities

13.  Adds some automation to the digestion process.  Controller allows for ramping, soaking, changes in temperature, and automatic shut-off.  Can control up to 2 HotBlock Pro blocks at once. HotBlock Pro

14. HotBlock - Distillations  SimpleDist  Suitable for ammonia and cyanide distillation  Phenol currently in development  Basic 12 place block  Fits other 50 mL HotBlock systems  Eliminates cooling water and most glassware

15. HotBlock – Organic Extractions  Soil-Cell System  Based on SW-846 3546  Utilizes a HotBlock rather than a microwave  Stainless steel cells contain the soil and solvent mixture  Creates same temperature and pressure conditions in the cell that the microwave creates in it’s cells  Working with EPA on global acceptance of apparatus

16. Available Models  15 mL cups  SC196 - 96 wells  50 mL cups  SC100 – 36 wells  SC154 – 54 wells  C6002 – 12 wells  100 mL cups  SC150 – 25 wells  SC151 – 35 wells All versions, except 12 well, also available in Pro models.

17. Custom HotBlocks  Custom blocks are available  Must fit into existing graphite footprint – 12”x12” or 12”x18”  Send us sample vessel to measure  May require one time additional tooling fee  Examples  ISM  Multiple cup sizes in one block  Centrifuge tubes

18.  There are times when a HotBlock is not feasible  Hot plate allows for larger digestion vessels such as beakers  Important to keep the same type of construction and heating technology in the hot plate as the HotBlock for the best performance Special Digestions

19. Thank you for attending Questions? 12/08/15