Kjeldahl range
COLO.Science — Organic elemental analysis · Kjeldahl
KJELFASTER-K700 Automatic Kjeldahl Analyzer
KJELFASTER-K700 is an automatic Kjeldahl analyzer with titration during distillation, 1.0 µL/step burette resolution and adjustable steam flow. It measures 0.1–240 mg N with recovery ≥99.5 % and a reproducibility (relative error of mean value) of ≤ ±0.5 %, offers two distillation modes (alkali before or after distillation), drains the tubes and rinses tube and titration cup automatically, monitors the distillate temperature, stores 1800 results and prints them on the integrated printer.
Overview
Applications
- Food and dairy: protein in milk, dairy, meat and cereals with preset sample types and user methods.
- Feed and agriculture: crude protein in feed; nitrogen in plants, soil and fertilizers.
- Water and environment: total Kjeldahl nitrogen (TKN) and ammonium nitrogen.
- Contract and QC labs: routine series with printed, traceable results.
Why KJELFASTER-K700
- Faster titration: titration runs during distillation; steam flow adjustable (50 / 80 / 100 %) for foaming samples.
- Less handling: automatic waste discharge, tube and titration cup rinsing, fast tube drain.
- Protected process: distillate temperature monitoring with emergency stop; alarms for cooling water, door, tube and empty reagent tanks.
- Low cost, full support: standard tubes, open reagents, no paid software; installation, training and method validation by COLO.Science.
Technical specifications
| Model | KJELFASTER-K700 |
| SKU | PRO3571 |
| Instrument type | Automatic Kjeldahl analyzer (distillation + titration) |
| Measuring range | 0.1–240 mg N |
| Recovery | ≥99.5 % |
| Reproducibility | relative error of mean value ≤ ±0.5 % |
| Time per sample | 5–10 min per sample |
| Sample size | solid ≤5 g, liquid ≤20 mL |
| Digestion tubes | φ42 mm, 300 mL (standard, open format) |
| Titration | colorimetric endpoint, titration during distillation |
| Burette resolution | 1.0 µL/step |
| Distillation modes | alkali before or after distillation |
| Steam flow | adjustable: 50 / 80 / 100 % |
| Automation | waste discharge, tube and titration cup rinsing, fast tube drain |
| Safety functions | distillate temperature with emergency stop; cooling water, door and tube sensors; empty-tank warning |
| Display | 5.6″ touchscreen |
| Data memory | 1800 results |
| Printer | integrated |
| Interfaces | USB or RS485 (optional) |
| Cooling water consumption | 1.5 L/min |
| Power supply | 220 V AC ±10 %, 50 Hz |
| Rated power | 2 kW |
| Dimensions (W×D×H) | 455 × 391 × 730 mm |
| Weight | 38 kg |
OPTIONS AND ACCESSORIES
Options and accessories for the KJELFASTER-K700
Standard delivery is confirmed in the quotation (integrated printer included). Digestion tubes, catalyst tablets and reagents are ordered separately; KJELDIG digestors and the EXSC5 scrubber complete the system.
PRO3575
KJELDIG-D250 Kjeldahl digestor
20 × 300 mL, up to 450 °C, ±1 °C, 10 programs × 5 steps; fume hood included.
Optional
PRO3576
KJELDIG-D450 infrared Kjeldahl digestor
Infrared + graphite, 400 °C in 25 min, 20 programs; hood and cooling rack included.
Optional
PRO5814
EXSC5 scrubber
Three-stage neutralization: water condensation, alkali, activated carbon; adjustable suction.
Optional
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Digestion tubes φ42 × 300 mL (set)
Standard open-format tubes for all KJELDIG digestors and KJELFAST / KJELFASTER units — one tube from digestion to distillation.
Optional
More options and consumables
- Built-in printer
- Reagent tanks (spare)
- Kjeldahl catalyst tablets
- Reagents: sulfuric acid, NaOH 40 %, boric acid with indicator, standard acid
Digestion tubes, reagents and spare parts on request. Full catalogue: Organic elemental analysis catalogue →
Selection guidance
KJELFASTER-K700 is selected when a routine laboratory needs finer titration, adjustable steam and automatic draining at mid-range cost. For entry-level analysis choose K500; for 21 CFR Part 11, 1 million results and a 24-position autosampler the K900.
Configuration checklist
- Daily samples: routine series; for unattended batches see K900 with A24.
- Low nitrogen: 1.0 µL/step; for 0.2 / 0.4 µL/step choose the K900.
- Documentation: printer, USB or RS485; for 21 CFR Part 11 choose the K900.
- Digestion: KJELDIG digestor and EXSC5 scrubber.
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.
Complete your Kjeldahl system
