Answering the common need for reliable 50 mL polypropylene tubes, this guide highlights five solid options for different lab contexts. These tubes are suitable for autoclaving, sample storage, and basic DNA/RNA work where clean handling and clear labeling matter. Best for students and technicians working with routine samples, these picks balance durability, readability, and value. The short buying table below helps compare core details at a glance.
| Product | Brand | Capacity | Key Feature | Best For |
|---|---|---|---|---|
| Kashi Scientific 50mL Self Standing | Kashi Scientific | 50 mL | Print graduation, write-on patch, skirted | Autoclave-ready labeling and easy marking |
| CertBuy 50ml Plastic Centrifuge Tubes | CertBuy | 50 mL | Graduated every 5 mL, screw-cap | Clear volume increments for quick measurements |
| Celltreat 50mL Central Tubes | Celltreat | 50 mL | Bold graduations, resealable cap | Easy identification in large batches |
| SimPure 50mL Conical Tubes | SimPure | 50 mL | Non-pyrogenic, DNase/RNase free, write marks | Sterile workflows and DNA work |
| Xuhal 50mL With Caps | Xuhal | 50 mL | 100-count pack, clear body, blue caps | Bulk storage and routine use |
Note: The table above lists general suitability. Specific applications should follow your lab’s safety and handling guidelines.
Kashi Scientific 50mL Self Standing Centrifuge Tubes
The Kashi Scientific 50 mL self-standing centrifuge tubes are made from high-purity polypropylene. They are designed for autoclaving and can tolerate high centrifugal forces. The tubes feature a white marking area for labeling and a printed graduation along the side for quick volume readings. Best for labs that require durable, autoclavable tubes with clear, easy-to-read graduations. A potential limitation is that exact tolerances and lot-to-lot consistency should be verified for highly sensitive measurements.
CertBuy 50ml Plastic Centrifuge Tubes
CertBuy’s 50 mL self-standing plastic tubes come in a 50-pack with screw caps. They are graduated every 5 mL and 2.5 mL, making them practical for routine sample handling and basic quantitative work. The conical bottom assists with complete sample recovery. Choose this if you need frequent replacements in bulk and straightforward, readable graduations. A caveat is that the material is listed as polypropylene; verify chemical compatibility for your specific solvents.
Celltreat 50mL Polypropylene Tubes
Celltreat offers sterile 50 mL tubes with bold black graduations and a large white marking area for clear labeling. The tubes are made from polypropylene and include HDPE caps that are smooth and easy to seal. Best for educational labs and facilities requiring labeled, easy-to-read components in a resealable package. Limitations may include variability in cap tightness across bulk lots, so inspect before use in critical workflows.
SimPure 50mL Conical Tubes
SimPure Conical Tubes come in a sterile, non-pyrogenic package with DNase/RNase-free assurances and a leak-proof screw-cap design. They feature clear graduations (±2%) and a white writing patch for labeling. Best for molecular biology workflows where sample integrity and labeling clarity are essential. A limitation is that the kit is listed as a large pack; ensure your storage space matches the bulk quantity to avoid waste.
Xuhal 100 Counts 50mL Tubes
This Xuhal option bundles 100 pieces in blue-cap self-standing tubes with a 50 mL capacity. The clear body makes observation easy, and the set is suitable for large-scale storage or repetitive use in teaching labs. Best for bulk storage and routine sampling. A minor caveat is that bulk pricing can vary; consider your projected usage to avoid overstocking.
Globe Scientific 6288 Tubes
Globe Scientific 50 mL tubes include attached blue flat caps and large white writing space with 0.5 mL graduations. They are designed for general-purpose use with an 8,500 x g spin rate capability and a wide temperature range. Best for general lab tasks requiring reliable, pre-attached caps and legible graduations. Avoid this option if your workflow demands unique cap types or non-standard volume markings.
Buying Guide
What to consider when choosing 50 mL polypropylene tubes
- Autoclavability and chemical resistance: Look for high-purity polypropylene and compatibility with your autoclave cycle and common solvents.
- Graduations and labeling area: Decide between transparent, boldly printed graduations and larger write-on patches for quick sample identification.
- Cap design: Screw caps vs. pre-attached caps affect leak resistance and handling efficiency in high-throughput settings.
- Quantity and packaging: Bulk packs reduce per-unit cost but require storage space; plan for your lab’s throughput and waste management.
- Sterility and RNase/DNase status: For molecular biology, non-pyrogenic and DNase/RNase-free status helps preserve sample integrity.
- Physical dimensions and fit: Confirm the stated length and diameter fit your racks, holders, and centrifuge rotors.
Frequently Asked Questions
- What does 50 mL mean for these tubes?
- Are these tubes suitable for autoclaving?
- Why are there write-on areas on some tubes?
- Which tubes are DNase/RNase free?
- Do all tubes come with caps?
It refers to the nominal internal volume capacity, useful for estimating how much sample a tube can hold.
Most listed options are designed for autoclaving, but always verify manufacturer specifications and your institution’s sterilization requirements.
White patches or clear graduations help with labeling and quick content identification in busy workflows.
Options from SimPure and similar listings often note non-pyrogenic and DNase/RNase-free status, suitable for sensitive molecular work.
Most listed options include screw caps or attached caps; always confirm the packaging details before ordering in bulk.