---
product_id: 377340303
title: "250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6)"
brand: "karter scientific"
price: "€ 288.51"
currency: EUR
in_stock: false
reviews_count: 5
category: "Karter Scientific"
url: https://www.desertcart.gr/products/377340303-250ml-glass-round-media-storage-bottles-with-gl45-screw-cap
store_origin: GR
region: Greece
---

# withstands 140°C heat GL45 autoclavable screw cap 250ml precision volume 250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6)

**Brand:** karter scientific
**Price:** € 288.51
**Availability:** ❌ Out of Stock

## Summary

> 🧬 Elevate your lab game with precision and durability in every drop!

## Quick Answers

- **What is this?** 250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6) by karter scientific
- **How much does it cost?** € 288.51 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/377340303-250ml-glass-round-media-storage-bottles-with-gl45-screw-cap)

## Best For

- karter scientific enthusiasts

## Why This Product

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

## Key Features

- • **Compact yet capacious:** 250ml volume in a sleek 140mm x 70mm footprint fits seamlessly into any workspace or lab bench.
- • **Autoclavable GL45 screw cap:** Blue polypropylene cap seals tight with drip-free pouring ring, perfect for sterile environments.
- • **Precision-graded for accuracy:** Graduated markings every 25ml ensure exact measurement for professional lab or creative use.
- • **Multipurpose heavy-duty design:** Ideal for storage, mixing, sampling, and sterilization—engineered for the modern scientific or creative professional.
- • **Industrial-grade borosilicate glass:** Ultra-durable, chemical-resistant glass with minimal thermal expansion for reliable performance under stress.

## Overview

Karter Scientific’s 250ml borosilicate glass round bottles come in a pack of six, featuring precise 25ml graduations and a robust GL45 blue polypropylene screw cap. Crafted from high-grade borosilicate glass, these bottles resist chemical corrosion and thermal shock up to 140°C, making them perfect for laboratory storage, mixing, and sterilization tasks. Their compact design and heavy-duty build ensure they meet the demands of professionals who value reliability and precision.

## Description

These heavy duty borosilicate glass round bottles can be used for storage as well as mixing and sampling. They include a linerless, one-piece autoclavable blue polypropylene plug seal GL45 threaded cap with a drip-free pouring ring. Max temperature of 140 degrees Celsius (284 degrees Fahrenheit). NON-ALKALINE-EARTH BOROSILICATE GLASS (BOROSILICATE GLASS 3.3): The B2O3 content for borosilicate glass is typically 12–13% and the SiO2 content over 80%. High chemical durability and low thermal expansion (3.3 × 10−6 K−1) – the lowest of all commercial glasses for large-scale technical applications – make this a multitalented glass material. High-grade borosilicate flat glasses are used in a wide variety of industries, mainly for technical applications that require either good thermal resistance, excellent chemical durability, or high light transmission in combination with a pristine surface quality. Other typical applications for different forms of borosilicate glass include glass tubing, glass piping, glass containers, etc. especially for the chemical industry. ALKALINE-EARTH-CONTAINING BOROSILICATE GLASSES (BOROSILICATE GLASS):In addition to about 75% SiO2 and 8–12% B2O3, these glasses contain up to 5% alkaline earths and alumina (Al2O3). This is a subtype of slightly softer glasses, which have thermal expansions in the range (4.0–5.0) × 10−6 K−1.

Review: Works well for the sterilization process.
Review: Sturdy (thick glass), easy to see contents. I use it for mixing up model engine diesel fuel and storing it. I wasn't confident that it would be air-tight, but it was easy to put an o-ring in the cap just to be sure.

## Features

- Volume: 250ml
- Graduations: 25ml, from 50ml to 200ml
- Screw Cap: GL45 Blue Polypropylene
- Dimensions: 140mm x 70mm (5.5in x 2.75in)
- Borosilicate Glass

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07WTRQNSD |
| Are batteries included? | No |
| Bottle Type | round |
| Brand | Karter Scientific |
| Capacity | 250 Milliliters |
| Colour | Pack of 6 |
| Country of Origin | USA |
| Customer Reviews | 4.4 4.4 out of 5 stars (660) |
| Date First Available | 27 August 2019 |
| Finish Type | Glass |
| Item Weight | 1 kg 700 g |
| Item model number | 251L5 |
| Manufacturer | Karter Scientific |
| Material | Borosilicate Glass |
| Model number | 251L5 |
| Net Quantity | 6.0 Count |
| Number of Items | 6 |
| Package Information | Bottle |
| Product Care Instructions | Hand Wash |
| Product Dimensions | 7W x 14H Centimeters |
| Recommended Uses For Product | storage |
| Reusability | Reusable |
| Shape | Round |
| Special Feature | heavy duty |
| Specific Uses For Product | Storage, Laboratory Use |
| Style | Borosilicate Glass |
| Theme | Science |

## Product Details

- **Bottle Type:** round
- **Brand:** Karter Scientific
- **Capacity:** 250 Milliliters
- **Colour:** Pack of 6
- **Material:** Borosilicate Glass

## Images

![250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6) - Image 1](https://m.media-amazon.com/images/I/61yWuAxGEiL.jpg)
![250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6) - Image 2](https://m.media-amazon.com/images/I/614LYmnpM9L.jpg)
![250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6) - Image 3](https://m.media-amazon.com/images/I/516FbhnQIuL.jpg)
![250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6) - Image 4](https://m.media-amazon.com/images/I/71W1Ajk2ThL.jpg)
![250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Karter Scientific 251L5 (Pack of 6) - Image 5](https://m.media-amazon.com/images/I/71lQSw5roWL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can i use at 15 psi in pressure cooker?**
A: Absolutely be sure lids are closed tight. I made the mistake of having them a bit cracked and my liquid boiled out. Also fill water in pressure cooker as high as the water is in the bottle.

**Q: Can these be used on a magnetic stirrer with a hot plate?**
A: Some of the bottoms of mine are insanely uneven,  but i have used them on a hot plate with stirrer and i have also used them in a pressure cooker and they have had no real problems so far.

**Q: How do you exlain one of mine cracking from thermal shock when I added room temp water after being microwaved for thirty seconds?**
A: Very poor tempering, poor quality glass.  I doubt these bottles are really borosilicate.  I’ve had the same thermal cracking issues.  From now on, I’m buying real Corning or Kimax.

**Q: Can these be frozen with liquid inside?**
A: Yes no problem

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***. on 4 October 2025*

Works well for the sterilization process.

### ⭐⭐⭐⭐⭐ Review
*by M***R on 30 March 2025*

Sturdy (thick glass), easy to see contents. I use it for mixing up model engine diesel fuel and storing it. I wasn't confident that it would be air-tight, but it was easy to put an o-ring in the cap just to be sure.

### ⭐⭐⭐⭐⭐ Review
*by E***A on 29 April 2022*

Estas botellas de medio son de excelente calidad y se ven muy bien. Las uso para almacenar soluciones en mi laboratorio.

## Frequently Bought Together

- Karter Scientific 250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, 251L5 (Case of 6)
- Labvida Upgrated 6 Size Low Form Glass Beaker Set, 25ml 50ml 100ml 250ml 500ml 1000ml, 3.3 Boro Glass beakers with Printed Graduation, LVA019

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-26*