---
product_id: 453442843
title: "50ml Plastic Centrifuge Tubes with Screw Cap, CBTONE 50 Pack Self-Standing Plastic 50ml Test Tube Polypropylene Conical Tubes with Cap, Graduated Marks"
brand: "certbuy"
price: "$181.79"
currency: USD
in_stock: true
reviews_count: 5
category: "Cert Buy"
url: https://www.desertcart.us/products/453442843-50ml-plastic-centrifuge-tubes-with-screw-cap-cbtone-50-pack
store_origin: US
region: United States of America
---

# Graduated marks every 2.5-5ml Leak-proof blue screw cap 50ml capacity precision 50ml Plastic Centrifuge Tubes with Screw Cap, CBTONE 50 Pack Self-Standing Plastic 50ml Test Tube Polypropylene Conical Tubes with Cap, Graduated Marks

**Brand:** certbuy
**Price:** $181.79
**Availability:** ✅ In Stock

## Summary

> 🔬 Elevate your lab game with precision, durability, and leak-proof confidence!

## Quick Answers

- **What is this?** 50ml Plastic Centrifuge Tubes with Screw Cap, CBTONE 50 Pack Self-Standing Plastic 50ml Test Tube Polypropylene Conical Tubes with Cap, Graduated Marks by certbuy
- **How much does it cost?** $181.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/453442843-50ml-plastic-centrifuge-tubes-with-screw-cap-cbtone-50-pack)

## Best For

- certbuy enthusiasts

## Why This Product

- Trusted certbuy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Secure Leak-Proof Seal:** Snap-on blue HDPE screw caps prevent leaks and contamination, keeping samples safe.
- • **Precision Volume Control:** Graduated markings in 2.5ml & 5ml increments for exact measurements every time.
- • **Durable Polypropylene Build:** Robust, chemical-resistant PP material designed for long-term freezing and sample integrity.
- • **Multipurpose Sample Storage:** Ideal for solids, powders, seeds, pills, and liquids—versatility that fits your workflow.
- • **Self-Standing Conical Design:** Stable base ensures upright positioning—no spills, no mess, perfect for busy labs.

## Overview

The CBTONE 50 Pack 50ml Plastic Centrifuge Tubes feature a self-standing conical design made from durable polypropylene, graduated for precise volume measurement, and equipped with secure blue screw caps to prevent leaks. Perfect for professional sample handling, storage, and freezing applications across scientific and industrial settings.

## Description

CBTONE 50 Pack Flat Screw Cap Premium Quality Conical Centrifuge Tubes, 50 mL Self-Standing Tubes Plastic Frozen Test Tubes Vial Seal Cap ContainerFeatures: Free-standing conical design. Highly visible white volume graduations. Low temperature, long - term freezing. Snap cap design,not easy to leak. Ideal for sample handling and storage. Features molded graduations in 2.5mL increments from 5 to 10mL and 5mL increments from 10 to 50mL. Supplied with blue HDPE (high density polyethylene) plug-seal srew caps.Specification: Diameter Outside: 25mm / 1.0inch Length: 114mm/4.5inch Closure Color: Blue Capacity: 50ml / 1.69 oz. Material: PP (Polypropylene) Shape: Freestanding with conical bottom Type: Centrifuge Tube

Review: Perfect for wastewater sampling ! No leak, stay up, fit on rack. 10/10
Review: Fueron lo que pidió mi hermano y todo bien para viales de citología

## Features

- Material: PP ( Polypropylene )
- Capacity: 50 ML, Graduated every 5ml and 2.5ml
- Dimension: 1.0 x 4.5inch / 25 x 114mm(DxL)
- Package Included: 50pcs 50ml Plastic Tubes
- Apply to loading solid, powder, seeds, pills, granular objects etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RS8VL7R |
| Are batteries included? | No |
| Best Sellers Rank | #258,727 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #129 in Microcentrifuge Lab Tubes |
| Brand | CertBuy |
| Customer Reviews | 4.6 4.6 out of 5 stars (158) |
| Date First Available | 13 January 2020 |
| Item Weight | 762 g |
| Item part number | CBUS-CentrifugeTube-50ML-50PCS-190510fa |
| Manufacturer | CBTONE |
| Number of Memory Sticks | 50 |
| Package Dimensions | 27.89 x 20.6 x 14.71 cm; 762 g |

## Images

![50ml Plastic Centrifuge Tubes with Screw Cap, CBTONE 50 Pack Self-Standing Plastic 50ml Test Tube Polypropylene Conical Tubes with Cap, Graduated Marks - Image 1](https://m.media-amazon.com/images/I/61dT2POzYaL.jpg)

## Questions & Answers

**Q: are these tubes leak proof when filled with liquids?**
A: They're screw cap and pretty leak proof. I used them to collect 50 water samples locally, kept them in ziplocs with their respective collection survey, and nothing spilled.

**Q: How accurate is the graduation of these tubes?**
A: Maybe the supplier has specs, but I suspect the precision is one of several more appropriate questions. It's not advertised as measuring liquids for quantitative analysis, just "solid, powder, seeds, pills, granular objects" but the volume is given to 1/10th of a milliliter. Being precise about the volume of a seed seems like an oxymoron, whereas powders are not. It will be interesting what answers you get!

**Q: Is the tube and cap pp5? I'm wondering if both can withstand an autoclave.**
A: The description states the blue cap is HDPE and not PP.  HDPE will not withstand the heat in an autoclave.

**Q: Is there a tube rack on amazon available for these tubes?**
A: No specific idea, sorry, but rack is mentioned a lot on the product page. They do stand upright on their own.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***T on 5 September 2025*

Perfect for wastewater sampling ! No leak, stay up, fit on rack. 10/10

### ⭐⭐⭐⭐⭐ Review
*by A***O on 28 June 2023*

Fueron lo que pidió mi hermano y todo bien para viales de citología

### ⭐⭐⭐⭐⭐ Review
*by C***. on 13 October 2025*

Outstanding little bottle. We use them for small machine screws and things like that. They hold up well.

## Frequently Bought Together

- 50ml Plastic Centrifuge Tubes with Screw Cap, CertBuy 50 Pack Self-Standing Plastic 50ml Test Tube Polypropylene Conical Tubes with Cap, Graduated Marks
- SimPure Centrifuge Tubes 15mL, Conical Tubes Sterile 50 PCS, Polypropylene, Leak-Proof Screw Caps, Plastic Container with Graduated and Write Marks, Non-pyrogenic, DNase/RNase Free, Human DNA-Free
- Test Tube Rack, Centrifuge Tube Holder (2 Pack - Blue and Orange) for 10ml, 15ml, 50ml, Detachable Plastic Stand, 28 Well

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-25*