Tauros Diagnostik is a specialized laboratory for veterinary diagnostics in birds and fish based on modern DNA analysis. Our range of services extends from reliable sex determination in birds to disease diagnostics in fish, as well as tick analysis and water analytics.
Tauros Diagnostik delivers reliable data for animal health and environmental quality.
Tauros Diagnostik GbR
Niederwall 5
D-33602 Bielefeld
© 2026 Tauros Diagnostik
| Parameter | Abbreviation / Symbol | Guideline values for carp | Limit values (TVO, 1990, 2001) (Drinking Water Ordinance) |
|---|---|---|---|
| pH value | pH | 6.5–8.5 | 6.5–9.5 |
| Conductivity (20°C) | LF | 1000 µs/cm | 2500 µs/cm (corrosion protection) |
| Total hardness | °dGH | 5–15° dH | – |
| Ammonium | NH4+ | < 0.1 mg/l | max. 0.5 mg/l |
| Nitrate | NO3– | < 100 mg/l | max. 50.0 mg/l |
| Nitrite | NO2– | < 0.1 mg/l | max. 0.5 mg/l |
| Phosphate | PO43- | < 0.2 mg/l | max. 6.7 mg/l |
| Chlorine | Cl2 | < 0.02 mg/l | max. 0.1 mg/l |
| Iron | Fe | < 0.9 mg/l | max. 2.0 mg/l |
| Copper* | Cu | < 0.04 mg/l | max. 2.0 mg/l |
| Manganese | Mn | < 0.1 mg/l | max. 0.05 mg/l |
| Contamination levels | Colony count (CFU/ml) | Enterobacteria (CFU/ml) | Pseudomonads / Aeromonads (CFU/ml) | Remarks |
|---|---|---|---|---|
| natural baseline level | < 300 | 0 – 5,000 | 0 – 5,000 | very good |
| low contamination | 300 – 800 | 0 – 5,000 | 0 – 5,000 | good |
| moderate contamination | 800 – 30,000 | 0 – 5,000 | 0 – 5,000 | harmless |
| significant contamination | 30,000 – 80,000 | 5,000 – 10,000 | 5,000 – 10,000 | concerning |
| heavy contamination | 80,000 – 400,000 | 5,000 – 10,000 | 5,000 – 10,000 | critical |
| very heavy contamination | 400,000 – 1,000,000 | > 10.000 | > 10.000 | take remedial action |
| extremely heavy contamination | > 1.000.000 | > 10.000 | > 10.000 | take immediate remedial action |
| Services | Digital order | Paper order |
|---|---|---|
| Price | from €9.50 | from €11.70 |
| Payment | Advance payment | Invoice |
| Processing time | 2–3 days | 2–3 days |
| Consumables | subject to a fee | free of charge |
| Authenticity check | Yes | Yes |
| Processing status information | Yes | Yes |

Select the desired DNA test, enter the bird species and ring number, and create the order form

Label a clean paper bag or envelope with the order’s position number

For each bird, we require 2-3 freshly plucked feathers (approx. 3-4 cm in size); shed feathers cannot be used.

Please send the samples and the order form to:
Tauros Diagnostik GbR
Niederwall 5
D-33602 Bielefeld

You will be automatically informed about the processing status; after 2–3 days, the result will be available in your account.

You can complete the order directly on your PC or by hand directly on the printed order form.

Label a clean paper bag or an envelope with the order position number.

We require 2-3 freshly plucked feathers (approx. 3-4 cm in size) per bird; molted feathers cannot be used.

Please send the samples and the order form to:
Tauros Diagnostik GbR
Niederwall 5
D-33602 Bielefeld

You will be automatically informed of the processing status. Results will be sent to you via email or postal mail within 2-3 days.