Product Overview

HI839800 COD Test Tube Heater is an easy-to-use thermal reactor made from durable materials. The aluminum block contains a capacity of 25 vials and one well for a reference temperature probe. Its well-marked user interface provides intuitive operation, equipped with two arrows to set the built-in timer and a temperature button with two predefined temperature settings: 150ºC and 105ºC. Other features include status indicators, a thermal fuse to prevent overheating, and a continuous LCD display.

• Low and high temperature alarms

• Built-in countdown timer

• Status indicators

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• More information

• HI839800 COD Test Tube Heater has two predefined temperature profiles: 150ºC and 105ºC. Chemical oxygen demand (COD) and

• HI839800 COD Test Tube Heater has two predefined temperature profiles: 150ºC and 105ºC. Digestion for chemical oxygen demand (COD) and total phosphorus is carried out at 150℃, while digestion for total nitrogen is carried out at 105℃. The test tube heater automatically heats to the set temperature and maintains it until the countdown timer ends. When the timer ends, a beep will sound and the heating element will turn off. Even during timed digestion, the housing of the HI839800 remains cool to the touch. The optional laboratory safety shield and test tube cooling rack provide a complete setup for sample digestion.

• Features at a glance

• Predefined temperature settings - The test tube heater has two predefined temperature profiles, 150ºC (221ºF) and 105ºC (301ºF), selectable with just the push of a button.

• Temperature alarms - If the temperature of the heating block is above or below the set temperature, the HI839800 will alert the user. The timer icon reminds the user to wait for the heating block to cool down or warm up before inserting samples.

• Built-in timer - With a built-in countdown timer of up to 180 minutes, users can easily set the desired digestion time by simply pressing the up and down arrows. Once the time is set and the heating element is stable, press the START button to begin the digestion program.

• Status indicators - There are three LED lights on the HI839800. The green LED indicates the heater is on; the yellow LED indicates when the heater is actively heating to the set temperature; when the heater temperature exceeds 50ºC, the red LED indicator alerts the user that the aluminum element is hot.

• Overheat protection - The HI839800 includes a thermal fuse to prevent overheating. If overheating occurs, the heater will automatically shut off and all LED indicators will turn off.

• Reference temperature well - In addition to the aluminum heating block with a capacity of 25 vials, a small well for a temperature probe is also provided for users who wish to verify their heating block.

• Two operating modes - The HI839800 has two operating modes: idle and heating. Idle mode is the default mode in which the heater measures and displays the current temperature, target temperature, set reaction time, and the “idle” label. Heating mode is activated when the user presses the START button; it begins when actively heating and continues during the countdown timer.

• Continuous LCD display - Even when no active temperature program is running, the block temperature is continuously displayed on the easy-to-read LCD display. In both idle and heating modes, all relevant information is easily visible in addition to the temperature.

• Error messages - Messages on the display alert to problems, including high or low temperature, hot surface, or heating system failure.