---
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: "33317 kr"
currency: ISK
in_stock: true
url: https://www.desertcart.is/products/377340303-250ml-glass-round-media-storage-bottles-with-gl45-screw-cap
store_origin: IS
region: Iceland
---

# withstands up to 140°C 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:** 33317 kr
**Availability:** ✅ In Stock

## Summary

> 🧬 Elevate your lab game with precision and durability!

## 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?** 33317 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/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

- • **Precision Graduations:** Clear 25ml increments from 50ml to 200ml for exact measurements every time.
- • **Autoclavable Screw Cap:** Blue polypropylene GL45 cap offers a secure, drip-free seal and withstands sterilization.
- • **Multipurpose Pack of 6:** Ideal for storage, mixing, and sampling—boost your efficiency with a ready-to-go set.
- • **Compact & Functional Design:** Perfect 140mm x 70mm size fits seamlessly into any lab or workspace setup.
- • **Industrial-Grade Borosilicate:** Ultra-durable glass with low thermal expansion ensures chemical resistance and longevity.

## Overview

These 250ml round media storage bottles by Karter Scientific feature heavy-duty borosilicate glass with superior chemical and thermal resistance. Equipped with autoclavable GL45 blue polypropylene screw caps, they provide a secure, drip-free seal and withstand temperatures up to 140°C. Graduated in 25ml increments, this pack of six is designed for professional laboratory storage, mixing, and sampling needs.

## 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.

## 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 |
|---------------|-------|
| Brand | Karter Scientific |
| Material | Borosilicate Glass |
| Bottle Type | round |
| Colour | Pack of 6 |
| Capacity | 250 Milliliters |
| Special Feature | heavy duty |
| Product Dimensions | 7W x 14H Centimeters |
| Product Care Instructions | Hand Wash |
| Recommended Uses For Product | storage |
| Number of Items | 6 |
| Theme | Science |
| Reusability | Reusable |
| Shape | Round |
| Style | Borosilicate Glass |
| Finish Type | Glass |
| Net Quantity | 6.0 Count |
| Package Information | Bottle |
| Specific Uses For Product | Storage, Laboratory Use |
| Item Weight | 1.7 Kilograms |
| Manufacturer | Karter Scientific |
| Country of Origin | USA |
| Model number | 251L5 |
| Item Weight | 1 kg 700 g |
| Item model number | 251L5 |
| Are batteries included? | No |

## Product Details

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

## 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 Name** 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

## 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 Iceland*
*Store origin: IS*
*Last updated: 2026-01-24*