MARC Mineral Acid Digestion Heater Blocks

MARC designs and manufactures a range of acid digestion equipment specifically designed for both aggressive and mild mineral acid digestions.  All our digester’s surfaces are available in aluminium or PTFE-coated graphite and all equipment is designed to ensure acid ingress is minimized – thereby prolonging the equipment’s lifespan. 

 

• Test Tube Digester Blocks for Aggressive Mineral Acid Environments – Anodised Aluminium or Graphite 

 We use 316SS for the body of the digester and the heater block itself is manufactured from aluminium and then anodised for additional chemical protection.  The heater block is also available in PTFE-coated graphite – which is recommended if metal contamination is a concern. The controller is detached from the main digester body so that it can be placed away from the fumes. 

The models in the table below are standard – however please feel free to request any variations.  Please note the digester blocks below are designed to heat aqueous samples at temperatures up to 185 deg C. For operator safety reasons – and to prolong element life – do not attempt to run the digester blocks at temperatures higher than 185 deg C.   At all times the draught-shield should be used to prevent user scalding and to prolong element life in a fume cupboard environment. 

 

 

Test Tube Config.	Temp Max.(deg C)	Body	Stock Codes (240V /50 or 60Hz)
			Anodised Aluminium Heater Block  25mm Hole Depth	PTFE-Coated Graphite Heater Block  55mm Hole Depth
16mm x 50	185	316SS	104446	189873
18mm x 50	185	316SS	104451	189875
20mm x 50	185	316SS	125434	189876
24mm x 50	185	316SS	125127	189863
16mm x 100	185	316SS	189871	189870
18mm x 100	185	316SS	125128	189869
20mm x 100	185	316SS	126183	189868
24mm x 100	185	316SS	189872	189862

 

 

 

 

• Flat Digester Blocks for Aggressive Mineral Acid Environments – Available with Aluminium or PTFE-Coated Graphite Heating Surfaces for Heavy Acid Beaker Or Volumetric Flask digestions. These blocks are specifically designed to minimize acid ingress and so are extremely durable.  These blocks are designed for the digestion of acidified aqueous samples up to 185 deg C. This equipment is designed for use in a fume cupboard with 15A power outlets. 

 

Size (mm)	Voltage (V)	Max Temp (°C)	Current Rating	Heater Block Material	Stock Code
610 x 500	220-240          50 or 60 Hz	185	15A	Anodized Aluminium	112776
				PTFE- Coated Graphite	112846
610 x 300			15A	Anodized Aluminium	112851
				PTFE-Coated Graphite	112856