The glass test tubes (with the tested samples and indicator paper) are inserted into their holders in the heating block. The temperature of the block is administered by a control unit which is comprised of an operational controller and a limit controller. The limit controller operates an independent alarm circuit which halts the heating process if temperatures were to accidentally increase above specified safety limits. Calibrated mercury thermometers or calibrated digital thermometers may be used to correct and control the temperature of the heating block.
The ABT™ apparatus consists of a heavy, aluminum heating block made of with 10 test tube holder holes. Each tube is covered with an individual lid equipped with a small hook. The indicator paper is then hung conveniently on the hook which is placed inside the tube when the lid is secured. OZM Research® supplies the highest quality of indicator paper-guaranteed to meet US Navy specifications and is currently being utilized and accredited by the USA Military.
The ABT’s™ standard heavy, aluminum heating block can hold and measure up to 9 samples (with individual time exposures for each one). Heating blocks with a different desired number of holes are available on request.