DDS Calorimeters


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Address: 22 Arbeid Avenue Strydom Park , Randburg, Gauteng 2194

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About DDS Calorimeters

DDS Calorimeters is the new home to the CAL2K and CAL3K Scientific Analytical Oxygen Bomb Calorimeter Systems. DDS and CAL3K offers the new next generation advanced bomb calorimeter system with innovative technology and never before seen advanced features.

The DDS CAL3K range is used to determine the calorific values of liquid and solid samples. The range of CAL3K oxygen bomb calorimeters is manufactured with various applications in mind; coal analysis and oil analysis being the most popular applications. The latest addition to the DDS Scientific range is the CAL3K-U bomb calorimeter, which is optimized for university use and educational institutions. The CAL3K-AP Oxygen Bomb Calorimeter combined the isothermal and adiabatic methods in one system.

Combustion Calorimeters measure the heat released from a combustible solid-liquid substance. This is done by weighing a precise measure of the sample substance into a crucible, placing the crucible inside a "bomb" (a sealed metal cylinder called a vessel), filling the vessel with oxygen and igniting the substance.

We, at DDS, have replaced the water with an aluminium sleeve pressed over the stainless steel cylinder and we have placed the temperature sensors in a cavity between the steel cylinder and the sleeve. No water! No stirrer!

The CAL3K can be applied in the coal, petrochemical, medical research, cement, power generation and animal feed research industries (to mention a few). The CAL3K can also be used to analyze coal, coke, oil, foodstuff and biomass products and is applied in power plants, coal mines, metallurgy, the chemical industry, for commercial inspection and scientific research. The use of multiple bomb vessels minimizes the waiting period by preparing the second bomb with a sample while the current sample is being analysed. Depending on your application, we recommend 2 bomb vessels per system, if needed.

The calorific value of any solid or liquid material that can be safely burned in any of our CAL3K oxygen bomb calorimeters. All our bomb calorimeters are supplied with one or more bomb vessel(s) and the required installation kits (firing cotton, firing wire, benzoic acid tablets, consumables, etc.) The complete CAL3K system also includes the air cooler to cool the vessel after a determination. The CAL3K range of oxygen bomb calorimeters comprises of : a CAL3K calorimeter ( CAL3K-AP , CAL3K-A , or CAL3K-U, or CAL3K-F ), filling station (excludes CAL3K-AP ), a waterless external air cooler , Windows based software , printer and balance connection, balance connection. Our DDS oxygen bomb calorimeters offer high performance and low maintenance costs at a competitive and affordable price.


Opening hours

Mon - Fri
Sat - Sun

Closed on Public Holidays. Closed for the Festive Season from 15 December - 9 January.

Products & services

CAL3K-AP Oxygen Bomb Calorimeter System from DDS Calorimeters thumbnail

CAL3K-AP Oxygen Bomb Calorimeter System


The CAL3K-AP is the first in the range of innovative new oxygen bomb calorimeters from DDS. The new range, from the engineers who designed the CAL2K oxygen bomb calorimeter range, features higher spe…

CAL3K-A Oxygen Bomb Calorimeter System from DDS Calorimeters thumbnail

CAL3K-A Oxygen Bomb Calorimeter System


The CAL3K-A is the companion product to the CAL3K-AP, but with external oxygen filling. This instrument was designed for rough production environments where the automatic filling is not desired. This…

CAL3K-U Oxygen Bomb Calorimeter System from DDS Calorimeters thumbnail

CAL3K-U Oxygen Bomb Calorimeter System


The CAL3K-U is the third in the range of innovative oxygen bomb calorimeters from DDS. It is the companion to the CAL3K-AP and CAL3K-A , but with external oxygen filling and without ATC. The new rang…

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