| Price | USD2000-7000 |
| MOQ | 1 Unit |
| Delivery Time | 5-8 working days |
| Brand | JUGE |
| Place of Origin | Nanjing, China |
| Certification | IOS9001, CE |
| Model Number | AG9000 |
| Packaging Details | Neutral carton |
| Payment Terms | Online order,T/T |
| Supply Ability | 100 Unit/Week |
| Test Method | Potassium dichromate oxidation spectrophotometric method | Place of Origin | Nanjing, China |
| Packaging Details | Neutral carton | Model Number | AG9000 |
| Indication Error | ≤±5%, ≤±8%, ≤±10% | Dimensions | 520H × 370W × 265D (mm) |
| Supply Ability | 100 Unit/Week | Certification | IOS9001, CE |
| Brand Name | JUGE | Payment Terms | Online order,T/T |
| Repeatability | ≤5% | Power Supply | AC 220±10% V |
| Measuring Range | 0~5000mg/L (segmented measurement, expandable) | Price | USD2000-7000 |
| Delivery Time | 5-8 working days | Minimum Order Quantity | 1 Unit |
| Weight | 40kg | Quantitative Lower Limit | ≤15mg/L |
Online CODcr COD Water Quality Analyzer Potassium Dichromate Oxidation Spectrophotometric Method Monitor
>>Overview
Chemical Oxygen Demand (COD) refers to the mass concentration of oxygen consumed by strong oxidants under specific conditions to oxidize organic and inorganic reducing substances in water samples. COD is a critical indicator reflecting the extent of water pollution caused by organic and inorganic reducing substances.
This analyzer is designed for long-term, unattended, automatic, and continuous operation based on field configurations. It is widely applicable to scenarios such as industrial pollution source wastewater discharge, industrial process wastewater, industrial wastewater treatment plant effluent, and municipal sewage treatment plant effluent. Depending on the complexity of on-site testing conditions, optional preprocessing systems can be integrated to ensure reliable testing processes, accurate results, and full compliance with diverse on-site requirements.
>>Features
A
mixture
of
the
water
sample,
potassium
dichromate
digestion
solution,
silver
sulfate
solution
(added
as
a
catalyst
to
enhance
oxidation
efficiency
for
straight-chain
aliphatic
compounds),
and
concentrated
sulfuric
acid
is
heated
to
165°C.
After
the
dichromate
ions
oxidize
organic
substances
in
the
solution,
a
color
change
occurs.
The
analyzer
detects
this
colorimetric
change,
converts
it
into
a
COD
value
output.
The
amount
of
dichromate
ions
consumed
corresponds
to
the
quantity
of
oxidizable
organic
matter,
which
is
quantified
as
the
COD
value.
>>Technical Parameter
| Test Method |
Potassium dichromate oxidation spectrophotometric method |
| Measuring Range |
0~5000mg/L (segmented measurement, expandable) |
|
Indication Error |
20% range standard solution: ≤±10% 50% range standard solution: ≤±8% 80% range standard solution: ≤±5% |
| Quantitative Lower Limit |
≤15mg/L |
| Repeatability |
≤5% |
|
Drift (24h) |
Low concentration drift: ±5mg/L High concentration drift: ≤5% |
| Masking Capacity |
Up to 20,000mg/L Cl⁻ |
| Measurement Time |
<50min (digestion time adjustable) |
| Measurement Modes |
Adjustable time interval, fixed time point, or triggered measurement |
|
Calibration Modes |
Automatic calibration (1~99 days adjustable) Manual calibration based on actual water samples |
|
Maintenance Cycle |
|
| Human-Machine Interface |
Touchscreen display and command input |
|
Self-Diagnosis & Protection |
Self-diagnoses operational status; retains data during anomalies/power outages Automatically clears residual reactants and resumes operation after reset/power recovery |
| Data Storage |
5-year data capacity |
| Input Interface |
Digital input |
|
Output Interfaces |
1× RS232, 1× RS485 2× 4~20mA analog outputs |
|
Operating Environment |
Indoor use; recommended temperature: 5~28℃, humidity ≤90% (non-condensing) |
|
Power Supply |
Voltage: AC 220±10% V Frequency: 50±0.5 Hz Power: ≤150W (excluding sampling pump) |
|
Dimensions |
520H × 370W × 265D (mm) |
