Water Cod Thermoreactor

Introduction

A water COD thermoreactor is a laboratory device used for the digestion of the water samples for the chemical oxygen demand (COD) analysis, by the heating of the sample with the digestion reagents in the tubes, and it is used in the environmental monitoring, the wastewater treatment, the laboratories, and the many other applications. The COD thermoreactor heats the sample tubes to the specified temperature, typically 150 degrees Celsius, for the specified time, during which the organic matter in the sample is oxidized by the digestion reagent, and the cooled samples are measured by the colorimetric or the titration method to determine the COD; the water COD thermoreactor consists of a heating block with the wells for the tubes, a temperature control system, a timer, and the controls, and it provides the uniform and the controlled heating, with features such as the digital temperature control and the alarm; the water COD thermoreactor is used for the digestion of the samples for the COD analysis, for the sample preparation in the water quality monitoring, for the compliance with the standards, and for many other applications, and it is available in various sizes, with the different numbers of the wells; the water COD thermoreactor is an essential equipment for the COD analysis. Water COD thermoreactors are used in the wastewater treatment, in the environmental monitoring, in the laboratories, in the industry, and for many other applications. With their digestion, water COD thermoreactors are essential for the COD measurement.

COD Thermoreactor T-S211CTR

COD thermoreactor is a tabletop unit with an aluminum heating block for optimum thermal conditions and a high level of homogeneity. Electronic temperature control ensures temperature regu...

Send Inquiry View more

COD Thermoreactor T-S212CTR

COD thermoreactor is a tabletop unit with an aluminum heating block for optimum thermal conditions and a high level of homogeneity. Electronic temperature control ensures temperature regu...

Send Inquiry View more

COD Thermoreactor T-S210CTR

COD Thermoreactor features a digestion capacity of up to 10 mL and operates at temperatures up to 190℃, ensuring accurate COD testing. It heats samples to 165℃ using oxidizing agents to...

Send Inquiry View more

Standards

ISO 15705:2002-Water quality-Determination of the chemical oxygen demand index (ST-COD)-Small-scale sealed-tube method

ISO 8245:1999-Water quality-Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)

ISO 7393-2:2017-Water quality-Determination of free chlorine and total chlorine-Colorimetric method using N,N-diethyl-1,4-phenylenediamine (DPD)

ISO 11923:1997-Water quality-Determination of suspended solids by filtration through glass-fibre filters

ASTM D4189-23-Standard Test Method for Silt Density Index (SDI) of Water

Complies with the above standards, but is not limited to them.

Features

1. COD thermoreactor for digesting water samples in chemical oxygen demand determination.

2. Precision temperature control with programmable heating and cooling cycles.

3. Accommodates multiple COD digestion tubes for simultaneous sample processing.

4. Suitable for wastewater, environmental and industrial water quality laboratories.

5. Includes heating block, tube rack, safety shield and operation manual.

FAQ

Q1: What testing scenarios is this instrument mainly applied to?

A: The COD thermoreactor is used in wastewater treatment plants, environmental monitoring laboratories, industrial effluent testing and research institutions to digest water samples for chemical oxygen demand determination. It supports COD testing by heating samples with oxidizing reagent at controlled temperature for a specified period, which is the critical sample preparation step before photometric or titrimetric COD measurement. The thermoreactor ensures consistent digestion temperature and time across all samples, which is essential for accurate and reproducible COD results. It is essential for environmental compliance monitoring, wastewater treatment process control, industrial effluent characterization and regulatory reporting where COD is a key indicator of organic pollution load in water.

Q2: What standards does the instrument comply with?

A: The digestion supports COD methods referenced in ISO 6060 for water quality COD determination, EPA Method 410.4, ASTM D1252 and relevant GB/T 11914 and HJ 828 standards. The instrument complies with relevant laboratory electrical and temperature safety standards. Digestion temperature and time should follow the standard specification, typically 150 degrees Celsius for 2 hours.

Q3: What is the warranty period for the whole machine and key components?

A: The whole reactor is covered by a 12-month warranty. The heating block, controller and safety features are covered, while COD tubes and reagents are consumables excluded from warranty. Damage from improper tube use, overheating or unauthorized repair is excluded.

Q4: Is this device difficult to operate? Is professional training required?

A: Operation requires trained laboratory personnel familiar with COD testing and chemical safety. We provide an operation manual and remote guidance. Proper reagent handling, tube sealing, temperature setting and cooling procedures are important for accurate results and operator safety, as COD digestion involves corrosive reagents and high temperature.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Temperature calibration against a reference thermometer is recommended every 6-12 months. Timer accuracy can be checked periodically. Heating block uniformity should be verified periodically. Full method verification with a COD standard solution is recommended for accredited laboratories.

Q7: Are supporting consumables universal?

A: COD digestion tubes and reagents are available from multiple chemical suppliers, though tube dimensions should match the reactor block. Reagent composition should follow the standard method. Long-term consumable cost is moderate, with reagents being the main recurring expense.

Q8: Can I customize parameters or supporting accessories?

A: Customization includes tube capacity, temperature range and programmable cycles. Additional tube racks and accessories can be ordered separately. Custom orders extend delivery lead-time.

Q9: Does the purchase include on-site installation and commissioning service?

A: Standard delivery includes the reactor, tube rack and accessories with an operation manual. Remote commissioning guidance is provided. On-site service is not included for standard orders.

Q10: What types of samples are compatible with this equipment?

A: The reactor digests water and wastewater samples within the COD concentration range of the selected reagent. Samples with high chloride content may require special reagent or pretreatment. Highly volatile or toxic samples require proper fume hood handling. Users should follow proper chemical safety procedures, including wearing appropriate personal protective equipment, ensuring tubes are properly sealed before heating, and allowing adequate cooling before opening to prevent pressure release and reagent splashing.