PRODUCTS

50 mL Conical & Self-Standing Centrifuge Tubes, Sterile

Sterile 50 mL clear polypropylene centrifuge tubes in conical and self-standing formats with screw caps and graduations.

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PRODUCT DETAILS

50 mL Sterile Centrifuge Tubes for Reliable Sample Processing

Puretest 50 mL clear polypropylene centrifuge tubes combine a screw cap, readable graduations, writing area and low-residue interior for laboratory sample processing. The listed sterile bagged configuration is free of heavy-metal color additives and is supplied with an irradiation-sterility reference of SAL 10⁻⁶.

Product Highlights

50 mL working format: Sized for larger-volume workflows.
Clear polypropylene body: Supports visual sample and pellet inspection.
Conical bottom: Directs liquid and pellets toward a controlled low point.
Flat screw cap: Provides a secure closure and convenient top surface.
Readable graduations and writing area: Support approximate volume checks and sample identification.
Smooth low-residue interior: Helps reduce sample retention during transfer.
High-speed centrifugation reference: Listed up to 18,000 ×g for the specified family; validate rotor and conditions.
Sterility and cleanliness: Irradiated sterile, SAL 10⁻⁶, with non-pyrogenic/endotoxin and non-cytotoxic references for the listed configuration.

Product Structure and Functional Design

The tube consists of a transparent graduated barrel, white writing zone, tapered conical base, threaded neck and ribbed screw cap. The conical geometry supports pellet localization, while the smooth interior and wide opening facilitate pipetting, decanting and resuspension. Conical and self-standing/skirted 50 mL structures are not interchangeable in every rotor. Confirm the exact base and adapter.

Technical Specifications

Attribute	Specification
Nominal capacity	50 mL
Product number	CT030050
Material	Clear polypropylene tube; cap material confirmed in quotation
Bottom	Conical / pointed
Closure	Flat screw cap
Graduations	Printed or molded volume scale with writing area
Maximum RCF reference	Up to 18,000 ×g for the listed configuration; method validation required
Sterility	Irradiation sterilized; SAL reference 10⁻⁶
Cleanliness reference	Heavy-metal-free, non-pyrogenic/endotoxin and non-cytotoxic claims for listed configuration
Standard pack	25/bag; 500/case
Use	Single-use laboratory centrifugation and sample handling

Application Guide

Workflow	Why This Format Fits
Cell harvesting and washing	Conical base concentrates cell pellets for supernatant removal.
Sample clarification	Clear body allows visual monitoring of pellet and supernatant.
Buffer and reagent preparation	Graduations provide convenient approximate volume reference.
Aliquoting and storage	Screw cap and writing area support organized sample handling.
Clinical-research and molecular preparation	Sterile cleanliness-controlled configurations support validated laboratory workflows.

Workflow and Equipment Compatibility

Confirm rotor bucket, adapter, tube support, cap clearance, fill volume, temperature and maximum RCF before use. The 18,000 ×g value is a product-family reference, not a universal operating instruction. Reduce speed when required by the rotor, adapter, sample density or temperature.

Material, Cleanliness and Quality Documentation

The tube family uses clear polypropylene supply configurations with cleanliness claims tied to the selected SKU. Heavy-metal status, pyrogen/endotoxin status, cytotoxicity, DNase/RNase status, sterilization method, SAL, temperature range and batch documents must be confirmed on the quotation rather than inferred from the family description.

Ordering Information, Packaging and OEM Supply

Capacity	SKU	Configuration	Pack / Case
50 mL	CT030050	Conical bottom, flat screw cap, sterile, bagged	25/bag; 500/case

Rack-packed, private-label and distributor-carton options can be discussed when available. State the required tube quantity, cap style, sterility, cleanliness documentation, destination market and OEM artwork.

Choose the Right Centrifuge Tube Capacity

Capacity / Page	Structure	Typical Selection
0.5 / 1.5 / 2.0 mL microcentrifuge tubes	Hinged snap cap; conical microtube	Small-volume sample preparation
10 mL conical centrifuge tube	Screw cap; conical bottom	Intermediate-volume processing
15 mL conical centrifuge tube	Screw cap; conical bottom	Routine cell and sample processing
50 mL conical / self-standing tube	Screw cap; conical or skirted option	Larger-volume centrifugation and storage
0.5–50 mL family selection guide	Family comparison	Capacity and bottom-style selection

Maximum RCF depends on the exact tube, rotor, adapter, fill volume and temperature. Request the current specification and validate samples before routine use.

Frequently Asked Questions

Question	Answer
Can I run the tube at 18,000 ×g?	Only after confirming the exact quoted SKU, rotor, adapter, fill volume and temperature. Use the lowest applicable equipment or consumable limit.
Are the graduations calibrated for analytical measurement?	They are approximate reference graduations. Use calibrated volumetric equipment for quantitative measurements.
Is the tube sterile?	The listed configuration is irradiation sterilized with an SAL 10⁻⁶ reference. Confirm the batch documents.
Can it be frozen?	Temperature limits depend on the exact tube, cap and sample. Request the current specification and validate the freezing protocol.
Are bulk and rack packs available?	The listed page describes a bagged configuration. Alternative rack or bulk arrangements can be quoted where available.
Can Puretest provide OEM labels?	Yes. Provide label artwork, regulatory wording, carton marks and annual volume.

Request a Sample, Technical Drawing or Quotation

Tell Puretest your required 50 mL centrifuge tubes, annual quantity, destination market, sterility and cleanliness requirements, packaging preference and any target instrument or method. We can prepare a sample plan, current specification sheet and OEM quotation for evaluation.

Request samples, technical documents or a quotation