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Optimized for Precision and Comfort – The New Centrifuge Tubes from nerbe plus
With the redesigned 50 mL centrifuge tubes from nerbe plus, we present the next generation of a proven laboratory essential – now featuring improved ergonomics, optimized handling, and enhanced user comfort.
The new design combines modern usability with maximum functionality:
The updated screw cap with wider ribbing now provides significantly improved grip, ensuring
secure opening and closing, even when wearing gloves or working under demanding laboratory conditions.
In addition, the overall tube length has been slightly adjusted to ensure even better compatibility with standard centrifuge rotors – for a stable and secure fit in every application.
Importantly, despite these design improvements, the material composition, chemical resistance, quality standards, and centrifugation performance remain completely unchanged. All products retain their proven characteristics – including a maximum RCF capacity of 20,000 × g, autoclavability up to 121 °C (without cap), and biological purity.
The tubes are made of high-purity polypropylene (PP) with a green polyethylene (PE) screw cap and are available in two versions: non-sterile (Art. 02-572-3001) and sterile R (Art. 02-572-8001).
| Sterility | Properties / Description |  |
|---|---|---|
| Non-sterile | Manufactured under high-purity conditions in certified cleanrooms – the ideal choice for precise standard applications. | |
| Sterile R | Certified sterile through irradiation with a SAL value of $10^{-6}$ – for maximum safety in microbiology and cell culture. |  |
Redesigned Cap for Improved Grip
Extended Tube Length
Your Advantages at a Glance
- Improved ergonomics: New screw cap with wider ribbing for a secure grip and comfortable opening and closing.
- Optimized compatibility: Adjusted tube length ensures a better fit with all common rotor types.
- Proven quality: No changes to material composition or production parameters – consistent nerbe plus quality.
- High centrifugation stability: Withstands up to 20,000 × g RCF for reliable results even in high-speed applications.
- Autoclavable & cold-resistant: Autoclavable up to 121 °C (without cap) and resistant to freezing temperatures down to –80 °C.
- High-purity material: Biologically inert, physiologically safe, and free from heavy metals according to EC/94/62.
- Maximum cleanliness: Free from RNase/DNase, human DNA, endotoxins, pyrogens, and PCR inhibitors.
- Practical design: Clear graduation marks, large labeling field, and green cap for easy identification.
- Multiple versions available: Offered as np non-sterile or Sterile R, meeting the highest purity requirements.
Technical Data
-
Article Numbers: 02-572-3001 (np) / 02-572-8001 (Sterile R)
-
Volume: 50 mL
-
Dimensions: Ø 30 mm × 115 mm (± 0.2 mm)
-
Tube Material: Polypropylene (PP)
-
Cap Material: Polyethylene (PE), green
-
Bottom Shape: Conical
-
Graduation: With scale and writing field
-
Centrifugation Performance: Max. RCF 20,000 × g
-
Temperature Range: –80 °C to +121 °C (without cap)
-
Purity: Free from RNase, DNase, human DNA, endotoxins, pyrogens, PCR inhibitors
-
Chemical Safety: Biologically inert, physiologically safe, free from heavy metals (EC/94/62), phthalate-free
-
Certification: EN ISO 13485
-
Packaging Units:
-
25 pcs / bag
-
250 pcs / carton
-
12,000 pcs / pallet (not stackable)
-
np PCR READY
With our pcr-ready products, you don't need to redefine your requirements. Our products give you the certainty that your PCR protocols demand.
- Manufactured in ISO Class 8 cleanrooms or better (DIN EN ISO 14644-1)
- Free of PCR inhibitors
- Free of human DNA
- Free of RNase and DNase
- Free of pyrogens
np sterile plus
Only products that have achieved a SAL value of 10⁻⁶ through irradiation or ethylene oxide sterilization receive this seal. Furthermore, these products are pyrogen-free. Your plus for integral analyses.
- Manufactured in ISO Class 8 cleanrooms or better (DIN EN ISO 14644-1)
- Sterile R (or EO)
- Free of pyrogens
 Item.-No. clickable to Webshop |  |  |  |  |  | | |
|---|---|---|---|---|---|---|---|
| 02-572-3001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], max RCF 20.000 g with fitted green screw cap [PE], max RCF 20.000 g | |
| 02-572-8001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], max RCF 20.000 g with fitted green screw cap [PE], max RCF 20.000 g | |
| 02-572-4001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], mit Standfuß, max RCF 7.000 g with fitted green screw cap [PE], skirted, max RCF 7.000 g | |
| 02-572-9001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], mit Standfuß, max RCF 7.000 g with fitted green screw cap [PE], skirted, max RCF 7.000 g | |
Frequently Asked Questions about Centrifuge Tubes
What is the difference between RCF (g-force) and RPM?
RPM measures revolutions per minute but does not account for the rotor radius. RCF (Relative Centrifugal Force) describes the actual force exerted on the sample. Our tubes are designed for high performance up to 20,000 g (RCF).
Why is the new nerbe plus cap ribbing beneficial?
The wider ribbing on the screw cap significantly improves ergonomics. It provides a better grip, making opening and closing much safer and more comfortable, especially when wearing lab gloves or handling moist containers.
Can the tubes be sterilized in an autoclave?
Yes, the polypropylene tubes are autoclavable up to 121 °C. It is crucial to leave the screw cap loose or remove it entirely to prevent deformation caused by pressure differences.
What should I consider when centrifuging samples stored at –80 °C?
Our tubes are cold-resistant down to –80 °C. However, when centrifuging deep-frozen samples, the material should be allowed to acclimatize slightly to ensure the plastic maintains its full mechanical strength.
What does "Free of RNase, DNase, and Pyrogens" mean?
This guarantees the absence of enzymes or impurities that could degrade your samples (e.g., DNA or RNA) or interfere with cell culture reactions. Our tubes are manufactured under strict cleanroom conditions to ensure this purity.
How does the new tube length affect lab work?
The slight increase in length optimizes compatibility with a wider range of common rotors. Additionally, the expanded area beneath the cap ensures an even more secure and consistent seal.
Optimized for Precision and Comfort – The New Centrifuge Tubes from nerbe plus
With the redesigned 50 mL centrifuge tubes from nerbe plus, we present the next generation of a proven laboratory essential – now featuring improved ergonomics, optimized handling, and enhanced user comfort.
The new design combines modern usability with maximum functionality:
The updated screw cap with wider ribbing now provides significantly improved grip, ensuring secure opening and closing, even when wearing gloves or working under demanding laboratory conditions.
In addition, the overall tube length has been slightly adjusted to ensure even better compatibility with standard centrifuge rotors – for a stable and secure fit in every application.
Importantly, despite these design improvements, the material composition, chemical resistance, quality standards, and centrifugation performance remain completely unchanged. All products retain their proven characteristics – including a maximum RCF capacity of 20,000 × g, autoclavability up to 121 °C (without cap), and biological purity.
The tubes are made of high-purity polypropylene (PP) with a green polyethylene (PE) screw cap and are available in two versions: non-sterile (Art. 02-572-3001) and sterile R (Art. 02-572-8001).
| Sterility | Properties / Description | |
|---|---|---|
| Non-sterile | Manufactured under high-purity conditions in certified cleanrooms – the ideal choice for precise standard applications. | |
| Sterile R | Certified sterile through irradiation with a SAL value of 10⁻⁶ – for maximum safety in microbiology and cell culture. | |
Redesigned Cap for Improved Grip
Extended Tube Length
Your Advantages at a Glance
- Improved ergonomics: New screw cap with wider ribbing for a secure grip and comfortable opening and closing.
- Optimized compatibility: Adjusted tube length ensures a better fit with all common rotor types.
- Proven quality: No changes to material composition or production parameters – consistent nerbe plus quality.
- High centrifugation stability: Withstands up to 20,000 × g RCF for reliable results even in high-speed applications.
- Autoclavable & cold-resistant: Autoclavable up to 121 °C (without cap) and resistant to freezing temperatures down to –80 °C.
- High-purity material: Biologically inert, physiologically safe, and free from heavy metals according to EC/94/62.
- Maximum cleanliness: Free from RNase/DNase, human DNA, endotoxins, pyrogens, and PCR inhibitors.
- Practical design: Clear graduation marks, large labeling field, and green cap for easy identification.
- Multiple versions available: Offered as np non-sterile or Sterile R, meeting the highest purity requirements.
Technical Data
- Article Numbers: 02-572-3001 (np) / 02-572-8001 (Sterile R)
- Volume: 50 mL
- Dimensions: Ø 30 mm × 115 mm (± 0.2 mm)
- Tube Material: Polypropylene (PP)
- Cap Material: Polyethylene (PE), green
- Bottom Shape: Conical
- Graduation: With scale and writing field
- Centrifugation Performance: Max. RCF 20,000 × g
- Temperature Range: –80 °C to +121 °C (without cap)
- Purity: Free from RNase, DNase, human DNA, endotoxins, pyrogens, PCR inhibitors
- Chemical Safety: Biologically inert, physiologically safe, free from heavy metals (EC/94/62), phthalate-free
- Certification: EN ISO 13485
- Packaging Units:
- 25 pcs / bag
- 250 pcs / carton
- 12,000 pcs / pallet (not stackable)
np PCR READY
With our pcr-ready products, you don't need to redefine your requirements. Our products give you the certainty that your PCR protocols demand.
- Manufactured in ISO Class 8 cleanrooms or better (DIN EN ISO 14644-1)
- Free of PCR inhibitors
- Free of human DNA
- Free of RNase and DNase
- Free of pyrogens
np sterile plus
Only products that have achieved a SAL value of 10⁻⁶ through irradiation or ethylene oxide sterilization receive this seal. Furthermore, these products are pyrogen-free. Your plus for integral analyses.
- Manufactured in ISO Class 8 cleanrooms or better (DIN EN ISO 14644-1)
- Sterile R (or EO)
- Free of pyrogens
| Item.-No. clickable to Webshop | | | | | | | |
|---|---|---|---|---|---|---|---|
| 02-572-3001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], max RCF 20.000 g with fitted green screw cap [PE], max RCF 20.000 g | |
| 02-572-8001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], max RCF 20.000 g with fitted green screw cap [PE], max RCF 20.000 g | |
| 02-572-4001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], mit Standfuß, max RCF 7.000 g with fitted green screw cap [PE], skirted, max RCF 7.000 g | |
| 02-572-9001 | PP/PE | Ø 30×115 mm | 50 ml | 25 | 250 | mit montiertem grünen Schraubdeckel [PE], mit Standfuß, max RCF 7.000 g with fitted green screw cap [PE], skirted, max RCF 7.000 g | |
Frequently Asked Questions about Centrifuge Tubes
What is the difference between RCF (g-force) and RPM?
RPM measures revolutions per minute but does not account for the rotor radius. RCF (Relative Centrifugal Force) describes the actual force exerted on the sample. Our tubes are designed for high performance up to 20,000 g (RCF).
Why is the new nerbe plus cap ribbing beneficial?
The wider ribbing on the screw cap significantly improves ergonomics. It provides a better grip, making opening and closing much safer and more comfortable, especially when wearing lab gloves or handling moist containers.
Can the tubes be sterilized in an autoclave?
Yes, the polypropylene tubes are autoclavable up to 121 °C. It is crucial to leave the screw cap loose or remove it entirely to prevent deformation caused by pressure differences.
What should I consider when centrifuging samples stored at –80 °C?
Our tubes are cold-resistant down to –80 °C. However, when centrifuging deep-frozen samples, the material should be allowed to acclimatize slightly to ensure the plastic maintains its full mechanical strength.
What does "Free of RNase, DNase, and Pyrogens" mean?
This guarantees the absence of enzymes or impurities that could degrade your samples (e.g., DNA or RNA) or interfere with cell culture reactions. Our tubes are manufactured under strict cleanroom conditions to ensure this purity.
How does the new tube length affect lab work?
The slight increase in length optimizes compatibility with a wider range of common rotors. Additionally, the expanded area beneath the cap ensures an even more secure and consistent seal.