Product catalogue · Kjeldahl
Organic Elemental Analysis — Catalogue
Specifications and compatibility of COLO.Science Kjeldahl systems: digestors, scrubber, distillation unit, automatic analyzers and autosampler. Select the analyzer by throughput and automation level, then add the digestor and scrubber.
Kjeldahl analyzers and distillation unit
| Parameter | KJELFASTER-K900 | KJELFASTER-K700 | KJELFASTER-K500 | KJELFAST-K300 |
|---|---|---|---|---|
| Type | Fully automatic analyzer | Automatic analyzer | Automatic analyzer | Distillation unit |
| Functions | Distillation, variable-speed titration, calculation, drain, self-test | Distillation, titration, calculation, printing, drain | Distillation, titration, calculation, printing | Distillation, alkali and boric acid dosing |
| Measuring range | 0.1–240 mg N | 0.1–240 mg N | 0.1–240 mg N | 0.1–240 mg N |
| Recovery | ≥99.5 % | ≥99.5 % | ≥99.5 % | ≥99.5 % |
| Reproducibility | relative error of mean value ±0.5 % | relative error of mean value ≤ ±0.5 % | relative error of mean value ≤ ±0.5 % | — |
| Time per sample | 3–8 min | 5–10 min | 5–10 min | 3–6 min (distillation) |
| Burette resolution | 1.0 µL/step (0.2 / 0.4 µL/step optional) | 1.0 µL/step | 2.0 µL/step | — |
| Sample size | solid ≤5 g, liquid ≤20 mL | solid ≤5 g, liquid ≤20 mL | solid ≤5 g, liquid ≤20 mL | solid ≤6 g, liquid ≤16 mL |
| Display | 10″ HD touchscreen (Android) | 5.6″ touchscreen, integrated printer | LCD, integrated printer | 4.3″ colour LCD |
| Data memory | 1 million results, 21 CFR Part 11 | 1800 results | 1000 results | — |
| Interfaces | USB, LAN, RS232, CAN, Wi-Fi | USB or RS485 (optional) | — | — |
| Cooling water | 0.5 L/min | 1.5 L/min | 1.5 L/min | 1.5 L/min |
| Autosampler | KJELFASTER-A24 (optional) | — | — | — |
| Power | 2 kW | 2 kW | 2 kW | 1.3 kW |
| Dimensions (W×D×H) | 460 × 360 × 725 mm | 455 × 391 × 730 mm | 455 × 391 × 730 mm | 400 × 385 × 735 mm |
| Weight | 38 kg | 38 kg | 38 kg | 30 kg |
Digestion, fume neutralization and autosampler
| Parameter | KJELDIG-D450 | KJELDIG-D250 | EXSC5 Scrubber | KJELFASTER-A24 |
|---|---|---|---|---|
| Type | Block digestor (infrared + graphite) | Block digestor | Fume neutralization system | Autosampler |
| Capacity | 20 tubes × 300 mL | 20 tubes × 300 mL | — | 24 positions |
| Temperature | RT +5 to 450 °C, ±1 °C; 400 °C in 25 min | RT +5 to 450 °C, ±1 °C | — | — |
| Programs | Programmable linear or curve heating | 10 programs × 5 steps, linear or curve heating | — | — |
| Display | 5.6″ colour screen | LCD | — | Controlled from the analyzer |
| Principle / features | Fume collection hood, cooling rack, PTFE-coated housing | Graphite block, fume collection hood | Water condensation, alkali neutralization, activated-carbon filter; adjustable suction, PTFE tubing | 4 × 15 L reagent tanks (approx. 500 analyses per fill), separate cleaning position |
| Power | 3.6 kW | 3.6 kW | Anti-corrosion vacuum pump | 24 V DC, 40 W via CAN |
| Dimensions | 515 × 458 × 730 mm | 515 × 421 × 211 mm | — | 920 × 625 × 908 mm |
| Weight | 40 kg | 25 kg | — | 80 kg |
Compatibility
| Option | Use with |
|---|---|
| KJELDIG-D250 / KJELDIG-D450 | All analyzers and the distillation unit: KJELFAST-K300, KJELFASTER-K500, K700, K900 (φ42 mm, 300 mL digestion tubes) |
| EXSC5 Scrubber | KJELDIG-D250 and KJELDIG-D450 digestors |
| KJELFASTER-A24 Autosampler | KJELFASTER-K900 only |
Configuration and prices: tell us the sample types and daily number of samples — COLO.Science will configure the digestor, scrubber and analyzer and send a quotation. Product pages for models without a link are in preparation; the address of this catalogue will not change.