COLO.Science — Water Quality · COD analyzers
COD100 Laboratory COD Analyzer
COD100 measures chemical oxygen demand (COD) of wastewater, surface water and industrial effluent by the closed-tube dichromate method (EPA 410.4, ISO 15705:2002): two LED light sources cover the 0–150 mg/L and 0–1500 mg/L ranges, with 2-point calibration, 200-result GLP memory and USB data transfer. The optional COD100R reactor digests 21 samples at a time.
Overview
Applications
- Wastewater treatment plants: influent and effluent COD, process control and reporting.
- Environmental laboratories: surface water and wastewater monitoring by a standardised method.
- Industry: food, dairy, chemical and paper effluents before discharge.
- Teaching: demonstration of the dichromate COD method.
Why COD100
- Standard method: closed-tube dichromate digestion per EPA 410.4 and ISO 15705:2002.
- Two ranges: 420 nm LED for 0–150 mg/L and 620 nm LED for 0–1500 mg/L.
- Simple calibration: 2-point calibration with standard solutions.
- Traceable data: 200 results with GLP data and USB transfer to a PC.
Technical specifications
| Model | COD100 |
| SKU | PRO4195 |
| Method | Closed-tube dichromate digestion, colorimetric reading |
| Standards | EPA 410.4, ISO 15705:2002 |
| Measuring range | 0–150 mg/L (low range) / 0–1500 mg/L (high range) |
| Light source | 2 LEDs: 420 nm (low range), 620 nm (high range) |
| Accuracy | ±8 % |
| Repeatability | ≤3 % |
| Drift | 6 mg/L / 20 min |
| Calibration | 2-point |
| Display | LCD |
| Data memory | 200 results, GLP |
| Data output | USB (PC) |
| Sample bottles | 5 glass bottles with screw caps |
| Power supply | AC adapter, 200–240 V AC input |
| Dimensions | 315 × 225 × 100 mm |
| Weight | approx. 2 kg |
| Reactor positions | 21 digestion tubes |
| Reactor temperature | 100–165 °C, settable |
| Reactor timer | 0–120 min, settable |
| Reactor safety | Transparent protective shield |
| Reactor dimensions / weight | 330 × 228 × 132 mm / 4 kg |
ACCESSORIES AND CONSUMABLES
Accessories for the COD100 COD analyzer
The COD100 is delivered with 5 colorimetric bottles and a power adapter. For digestion, the optional COD100R reactor (PRO4190) heats 21 tubes at 100–165 °C with a 0–120 min timer; the tube rack and digestion tubes are supplied with it.
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Colorimetric bottles, 5 pcs
Glass bottles with screw caps for reading the digested samples and the blank in the measuring slot.
Standard delivery
PRO4190
COD100R digestion reactor
21 positions, 100–165 °C, timer 0–120 min, transparent protective shield; tube rack and 21 digestion tubes included.
Optional
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Tube rack and digestion tubes
Stainless steel rack and 21 digestion tubes, supplied with the COD100R reactor.
Optional
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Measuring slot with light-tight lid
Flip-up lid closes the measuring slot during the reading; no separate cuvette holder is needed.
Standard delivery
Consumables on request
- COD reagent, low range (0–150 mg/L)
- COD reagent, high range (0–1500 mg/L)
- COD calibration standard (KHP)
- Spare digestion tubes
Reagents, standards and spare tubes are offered on request. Full catalogue: Electrochemistry catalogue →
Selection guidance
COD100 is chosen when a laboratory needs COD results by the standard dichromate method without a full spectrophotometer. COLO.Science helps with the reactor, reagents and standards.
Configuration checklist
- COD level: expected COD of the samples — low range 0–150 mg/L or high range up to 1500 mg/L.
- Number of samples: daily sample count — the COD100R reactor digests 21 tubes at a time.
- Reagents: ready-made reagents or in-house preparation.
- Documentation: GLP memory and USB transfer for reports.
Sales and support for international customers
COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.
