---
product_id: 456103790
title: "United Scientific FG5340-1000 Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 1000ml Capacity"
brand: "united scientific"
price: "$119.29"
currency: USD
in_stock: true
reviews_count: 5
category: "United Scientific"
url: https://www.desertcart.us/products/456103790-united-scientific-fg5340-1000-borosilicate-glass-heavy-wall-filtering-flask
store_origin: US
region: United States of America
---

# Autoclavable for sterile reuse 1000mL heavy-duty capacity Borosilicate glass - chemical & thermal resistant United Scientific FG5340-1000 Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 1000ml Capacity

**Brand:** united scientific
**Price:** $119.29
**Availability:** ✅ In Stock

## Summary

> 🧪 Elevate your lab game with durability and precision!

## Quick Answers

- **What is this?** United Scientific FG5340-1000 Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 1000ml Capacity by united scientific
- **How much does it cost?** $119.29 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/456103790-united-scientific-fg5340-1000-borosilicate-glass-heavy-wall-filtering-flask)

## Best For

- united scientific enthusiasts

## Why This Product

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

## Key Features

- • **Autoclavable Design:** Sterilize with confidence for repeated lab use
- • **Precision Graduations:** 50mL intervals for accurate measurement and monitoring
- • **Robust 1000mL Capacity:** Generous volume for high-demand filtration tasks
- • **Bolt Neck with Tubulation:** Secure connections minimize leaks and maximize efficiency
- • **Premium Borosilicate Glass:** Engineered for superior thermal shock & chemical resistance

## Overview

The United Scientific FG5340-1000 is a 1000mL borosilicate glass filtering flask featuring a heavy wall design for enhanced durability. Its bolt neck with tubulation ensures secure connections, while the autoclavable material supports repeated sterilization. Graduated in 50mL increments, it combines thermal shock resistance and chemical durability, making it an essential tool for professional laboratory filtration.

## Description

Borosilicate glass flasks are designed to give the best combinations of thermal shock resistance, physical strength, and resistant to chemical attack.

Review: Exlente lastima que el segundo lo quebraron llego hecho pedasos gracias por un bolo de vidrios qiebradosanimo amigos si ocupan vidrios quebrados pidan uno 👍
Review: Worked really well, seems to be heavy built.

## Features

- Autoclavable: Yes
- Material: Borosilicate Glass
- Description: Filtering Flask, Borosilicate Glass; 1000 mL
- Graduation Interval (mL): 50
- Bottom Outside Diameter (mm): 138

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ES3R29M |
| Item model number | FG5340-1000 |
| Manufacturer | United Scientific Supplies, Inc. |
| Product Dimensions | 13.79 x 13.79 x 24.51 cm; 668 g |

## Product Details

- **Bottom shape:** Round
- **Brand:** United Scientific
- **Capacity:** 1000 Milliliters
- **Graduation interval:** 1000 Milliliters
- **Material:** Borosilicate Glass

## Images

![United Scientific FG5340-1000 Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 1000ml Capacity - Image 1](https://m.media-amazon.com/images/I/51EYBphcgUL.jpg)

## Questions & Answers

**Q: What is the tube size? My 1/4" ID tube will not fit.**
A: Try 5/16" ID Silicone tubing.  3/8" Tygon might work as well.

**Q: is anyone positive (Not "pretty sure") what size stopper works with this flask?**
A: The flask opening is one and three-eighths inch in diameter.  Do a internet search for standard stopper sizes.  A stopper that is one and one-half inches in diameter at the widest end should be adequate.

**Q: What size stopper fits this flask?**
A: I'm pretty sure it was a size 10

**Q: Stopper size?**
A: Hey Carlton.  Where I found my "Stopper" was a Local place that supplies equip to the Home Beer Brewer.  I will looking for something that was "Food" Grade.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***L on 17 September 2022*

Exlente lastima que el segundo lo quebraron llego hecho pedasos gracias por un bolo de vidrios qiebradosanimo amigos si ocupan vidrios quebrados pidan uno 👍

### ⭐⭐⭐⭐⭐ Review
*by M***T on 14 April 2025*

Worked really well, seems to be heavy built.

### ⭐⭐⭐⭐⭐ Review
*by J***Y on 10 February 2022*

I haven't used it yet because I need tubing but the flask looks to be of good quality, with thick walls and no damage occured in transit.

## Frequently Bought Together

- United Scientific™ FG5340-1000 Laboratory Grade Borosilicate Glass Heavy Wall Filtering Flask, Bolt Neck with Tubulation, 1000ml (1 Liter) Capacity
- 9 Count Filter Adapter Cones Set, Buchner Funnel Flask Adapter Set, Tapered Collar
- United Scientific™ JBF600 Buchner Funnel, Porcelain, Capacity 600mL, Compatible with 11cm Filter Paper, 1 Each

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-23*