---
product_id: 23636553
title: "Laboy Single-Neck Round-Bottom Flask, 1000mL, 24/40 Outer Joint"
brand: "laboy"
price: "¥37653"
currency: JPY
in_stock: true
category: "Laboy"
url: https://www.desertcart.jp/products/23636553-laboy-single-neck-round-bottom-flask-1000ml-24-40-outer
store_origin: JP
region: Japan
---

# Precision-ground 24/40 outer joint for seamless connections Heavy-wall borosilicate glass for even heat distribution 1000mL capacity for scale-up synthesis Laboy Single-Neck Round-Bottom Flask, 1000mL, 24/40 Outer Joint

**Brand:** laboy
**Price:** ¥37653
**Availability:** ✅ In Stock

## Summary

> ⚗️ Elevate your lab game with precision and power!

## Quick Answers

- **What is this?** Laboy Single-Neck Round-Bottom Flask, 1000mL, 24/40 Outer Joint by laboy
- **How much does it cost?** ¥37653 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/23636553-laboy-single-neck-round-bottom-flask-1000ml-24-40-outer)

## Best For

- laboy enthusiasts

## Why This Product

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

## Key Features

- • **Heat Mastery:** Spherical heavy-wall design ensures uniform heat transfer for flawless reactions
- • **Scale-Up Ready:** Generous 1000mL volume supports industrial R&D and high-throughput workflows
- • **Lab-Smart Design:** Optimized for controlled heating and vented systems to maximize safety and efficiency
- • **Durable & Reliable:** Crafted from ASTM E438 Type I, Class A borosilicate glass for chemical resistance and longevity
- • **Seamless Integration:** Precision-ground 24/40 joint guarantees airtight, secure connections with standard lab components

## Overview

The Laboy Single-Neck Round-Bottom Flask offers a robust 1000mL capacity ideal for scaling industrial and research syntheses. Made from premium borosilicate glass with a heavy-wall spherical design, it ensures even heat distribution and durability. Its precision-ground 24/40 outer joint provides secure compatibility with standard lab apparatus, making it a versatile and reliable vessel for advanced laboratory applications.

## Description

Laboy Single-Neck Round-Bottom Flask, 1000mL, 24/40 Outer Joint | Even heat distribution | Heavy-wall construction | Precision-ground connection | Multipurpose reaction vessel: desertcart.com: Industrial & Scientific

## Features

- Application: The 1000mL capacity supports scale-up work, industrial R&D and high-throughput synthesis requiring efficient heat transfer.
- Capacity & Pack: Each flask has a 1000mL nominal capacity; this listing includes one flask.
- Joint Compatibility: Precision-ground 24/40 Outer Joint connects with matching 24/40 Inner Joint condensers, adapters and distillation components.
- Construction: Spherical heavy-wall body promotes even heat distribution and is made from 3.3 Borosilicate Glass meeting ASTM E438 Type I, Class A.
- Use & Care: Inspect before use, support the round body securely, keep atmospheric systems vented, use controlled laboratory heating and do not heat dry.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B010BA0O4U |
| Best Sellers Rank | #319,788 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #62 in Lab Boiling Flasks |
| Bottom Shape | Round |
| Brand | LABOY |
| Brand Name | LABOY |
| Capacity | 1000 ml |
| Customer Reviews | 4.7 out of 5 stars 153 Reviews |
| Item Highlight | Even heat distribution | Heavy-wall construction | Precision-ground connection | Multipurpose reaction vessel Item Highlight Even heat distribution | Heavy-wall construction | Precision-ground connection | Multipurpose reaction vessel See more |
| Item Weight | 1 g |
| Manufacturer | Laboy |
| Material | Borosilicate Glass |
| Material Type | Borosilicate Glass |
| Model Number | HMF010331 |
| Number of Items | 1 |
| Part Number | HMF010331 |
| Shape | Round |
| Unit Count | 1 Count |

## Product Details

- **Bottom Shape:** Round
- **Brand:** LABOY
- **Capacity:** 1000 Milliliters
- **Manufacturer:** Laboy
- **Material:** Borosilicate Glass

## Images

![Laboy Single-Neck Round-Bottom Flask, 1000mL, 24/40 Outer Joint - Image 1](https://m.media-amazon.com/images/I/316BhfxhnDL.jpg)
![Laboy Single-Neck Round-Bottom Flask, 1000mL, 24/40 Outer Joint - Image 2](https://m.media-amazon.com/images/I/61X6Xw8LPsL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Is this glassware compatible with other major brands like Corning or Chemglass?**
A: Laboy glassware uses standard taper ground joints (e.g., 24/40) that are precision-ground. They are fully interchangeable with any other glassware adhering to US ASTM standards, ensuring a leak-tight seal with your existing setup.

**Q: Can this flask withstand high vacuum applications without imploding?**
A: Yes. This is a heavy-wall design (hand-blown to approx. 3.5mm thickness) and has been thoroughly annealed to remove stress. It is specifically engineered to withstand the pressure differences of vacuum distillation safely.

**Q: I'm worried about breakage during shipping. How is it packaged?**
A: We prioritize safe delivery. Each piece is wrapped in thick bubble wrap and cushioned within a sturdy, custom-fitted box.If it arrives damaged, we will replace it immediately.

**Q: What is the maximum temperature this glass can handle?**
A: Made from premium Borosilicate 3.3 glass, it has a low coefficient of thermal expansion. It can withstand temperatures up to 500°C (932°F) for short periods and is highly resistant to thermal shock (sudden temperature changes).

**Q: What is the difference between "heavy wall" and standard glassware?**
A: Standard glassware often has thin, uneven walls that are prone to cracking. Laboy glass is hand-blown by skilled lampworkers to ensure a uniform, heavier wall thickness (up to 2x thicker than standard), providing superior durability for lab use.

## Frequently Bought Together

- Laboy Glass 1000mL Single Neck Round Bottom Boiling Flask Heavy Wall with 24/40 Joint Heating Reaction Receiving Flask Organic Chemistry Lab Glassware
- 12 pcs Keck Clips Ground Joints #24, Standard Taper POM for Joints 24/29 and 24/40
- QWORK Boiling Flask, Single Neck Round Bottom, 24/40 Standard Taper Outer Joint, 1000ml

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**Shop now:** [https://www.desertcart.jp/products/23636553-laboy-single-neck-round-bottom-flask-1000ml-24-40-outer](https://www.desertcart.jp/products/23636553-laboy-single-neck-round-bottom-flask-1000ml-24-40-outer)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-12*