Hanna Instruments HI839800 COD Test Tube Heater
Easy to use thermoreactor made of sturdy materials, the HI839800 COD Test Tube Heater. The aluminum block features a well for a reference temperature sensor and a capacity for 25 vials. With two arrows to set the internal timer and a temperature button with two predefined temperature settings—150°C and 105°C—its clearly labeled user interface offers simple operation. Status indication lights, a thermal fuse to avoid overheating, and a continuous LCD display are other features.
- Alerts for low and high temperatures
- Timer counting down built-in
- LED status indicators
Two predetermined temperature profiles are available for the COD Test Tube Heater: 105oC and 150oC. Total phosphorus and chemical oxygen (COD) digestions are carried out at 150 °C, whereas total nitrogen digestions are carried out at 105 °C. The test tube heater starts heating up automatically and maintains the temperature there until the countdown timer expires. The heating element will switch off and a buzzer will be heard when the timer expires. Despite a timed digestion, the HI839800’s exterior feels cool to the touch. For sample digestions, a full setup includes a test tube cooling rack and an optional lab safety shield.
Description
- Predefined Temperature Settings: The test tube heater has two preset temperature profiles that may be selected at the touch of a button, 150°C (221°F) and 105°C (301°F).
- Temperature Alerts: The HI839800 notifies users if the heating block’s temperature veers above or below the predetermined level. Users are reminded to wait until the heating block has warmed up or cooled before inserting their samples via a timer icon. Internal Timer – Users may easily set the appropriate digesting time by simply pushing the up and down arrows thanks to an integrated countdown timer with a range of up to 180 minutes. The digesting process is started by pressing the START button after the timer has been set and the heating element is steady.
- Three LED lights serve as status indicators on the HI839800. Green LEDs show that the heater is on; yellow LEDs show that it is actively heating up to a certain temperature; and red LEDs show that the heater has reached a temperature above 50°C, alerting the user that the aluminum element is hot.
- Prevention of Overheating: The HI839800 has a thermal fuse that guards against overheating. The heater will immediately turn off and all LED indicator lights will go off if it overheats. Reference Temperature Well – In addition to the aluminum heating block’s 25 vial capacity, a small well for a temperature probe is offered for users who want to confirm their heating block. Idle and heating are the two operating modes available on the HI839800. The heater’s default setting is idle mode, which measures and shows the current temperature, goal temperature, predetermined reaction time, and a tag that reads “idle.” When users push the START button, the heating mode starts when the device is actively heating and runs during the countdown timer.
- Even when there is no active temperature program running, the block temperature is continuously displayed on the simple-to-read LCD display. During idle and heating modes, in addition to temperature, all pertinent information is readily displayed. Error Messages: Messages that appear on the screen to inform users to issues such as extreme heat or cold, hot surfaces, or broken heating systems.
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