Environmental Express Webinar HotBlock Systems – Precision Heat

with Various Uses

12/08/15

Decades of Digestions – 1970s

Hot plate Fume hood Gloves Safety glasses

Hot plate Fume hood Gloves Safety glasses Lab coat

Decades of Digestions – 1980s

Sample contamination Safety Accuracy Absence of uniform

heating Transfer steps

Problems with Early Digestion Procedures

Decades of Digestions – 1990s

Digestion methods improve

Environmental Express introduces HotBlockTM Digestion Systems

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

Teflon®-coated graphite block provides uniform heating

Kydex® housing is fire-resistant and acid-resistant

Benefits of Using HotBlock™ Construction

Silicone heating mat evenly applies heat for temperature uniformity

Easy-to-use controller allows for precise temperature control

Benefits of Using HotBlock™ Construction

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

HotBlock

Other digestions

Phosphorous – 365.1

Cr6+ - 3060A/7196A

Nitrogen – Alkaline persulfate digestions SM4500N-C

Mercury – 245.1

HotBlock – Industrial Hygiene

GhostWipe Lead and Beryllium

Method requires ‘rigid walled container’ for transport

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

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

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

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

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.

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

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

Thank you for attendingQuestions?

12/08/15