HotBlock 450 Systems

HotBlock 450 Systems

Our HotBlock 450 System is Programmable, Easy to Use, & Pairs Very Well for SimpleDist

Environmental Express' HotBlock 450 systems come in 28-well, 40-well, and 54-well configurations for round bottom and flat bottom tubes. Holds various temperatures, most notably at 160°C and 380°C.

Pair with our SimpleDist system and speed up your procedure time by using the same rack and glass tubes throughout the procedure!


Temperature Range  Ambient to 450°C
Dimensions (W x H x D):  28-well block: 21" x 16" x 10.5"

 54-well block: 22 ¼" x 16" x 14 ¼"
Electrical:  240 VAC, 50/60 Hz

Click here for the HotBlock 450 Manual. 

HotBlock 450 Controllers

Item No. Description
TKN100 TKN - Base Controller, Each
TKN180 TKN - Touch Screen Controller, Each

HotBlock 450 Systems

Item No. Description
TKN028 HotBlock® - 28-Position With Racks, TKN
TKN028SYS-NT TKN - 28-Well System, Block/Ctrl/Rack/NonThreaded
TKN028SYS-TH TKN - 28-Well System, Block/Ctrl/Rack/Threaded Glass
TKN040RB HotBlock® - 40-Position, w/Racks, Round Bottom, 250mL
TKN040SYS-RB TKN - 40-Well System, Block/Ctrl/Rack/RndBottom,250mL
TKN054 HotBlock® - 54-Position With Racks, TKN
TKN054RB HotBlock® - 54-Position,w/Racks,Rnd Btm,TKN,75/100mL
TKN054SYS-NT TKN - 54-Well System, Block/Ctrl/Rack/NonThreaded
TKN054SYS-RB TKN - 54-Well System, Block/Ctrl/Rack/RndBottom,100mL
TKN054SYS-TH TKN - 54-Well System, Block/Ctrl/Rack/Threaded Glass


What size tubes does the TKN Hotblock hold? We currently have a TKN digestion hotblock made by Westco. It is the Smart Digest 40/20 and we are looking to replace it.

Our TKN block is designed to fit the same size tubes that we use in our SimpleDist block and our standard metals digestion HotBlocks. The diameter of the tube is 30.3 mm.

what is the warranty on this controller? ours is not working.

Our equipment typically carries a one year warranty. If you suspect a warranty issue, please contact us at 800.343.5319 and ask for HotBlock tech support to diagnose the potential problems.

What is the tube volume?

The tube has a total volume of 100+ mL. When using this tube for TKN analysis we recommend not exceeding 25 mL sample. This will allow the addition of the digestion solution and still leave ample room for the sample to boil during the digestion process.

Is this controller capable of progamming to run a sequence of 3 temperatures?

This controller comes set with a 2 step TKN digestion programmed into it. If you wish to use digestion profiles other than the preprogrammed TKN sequence you will need to use TKN180.

what is the dimensions of each well.

Each well has a diameter of 1.24”.

Is this EPA aproved?

The EPA does not approve equipment. Our TKN unit is capable of performing the EPA approved TKN digestion procedure.

Does this controller need to be placed outside the hood?

This controller should be placed outside the hood away from the acidic environment.

Is this controller programmable and how can I get further information about this unit?

Our TKN controllers come preprogrammed with the times and temperatures from the EPA 351.2 TKN method. Our simple controller (TKN100) can hold one temperature program. We also have a premium, touch screen controller (TKN180) that can hold multiple temperature programs. You can also find more information on our website https://www.envexp.com/products/1-Wet_Chemistry/TKN-TKN_Systems/TKN1-TKN_Systems

Click on an item to see additional information or ask a question.