---
product_id: 333166062
title: "Karter Scientific 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, (Pack of 2)"
brand: "karter scientific"
price: "R1716"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/333166062-karter-scientific-1000ml-glass-round-media-storage-bottles-with-gl45
store_origin: ZA
region: South Africa
---

# Heat resistant to 140°C GL45 leak-proof screw cap 1000ml precision capacity Karter Scientific 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, (Pack of 2)

**Brand:** karter scientific
**Price:** R1716
**Availability:** ✅ In Stock

## Summary

> 🧴 Elevate your lab game with precision and durability!

## Quick Answers

- **What is this?** Karter Scientific 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, (Pack of 2) by karter scientific
- **How much does it cost?** R1716 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/333166062-karter-scientific-1000ml-glass-round-media-storage-bottles-with-gl45)

## 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 100ml increments from 100ml to 800ml for accurate measurement and mixing.
- • **Generous 1000ml Capacity:** Perfectly sized for versatile storage, sampling, and mixing needs in any professional lab.
- • **Pack of Two for Efficiency:** Double up your workflow with two identical bottles, ready to handle your busiest days.
- • **Autoclavable Leak-Proof Cap:** Blue polypropylene GL45 screw cap ensures airtight seal and drip-free pouring every time.
- • **Lab-grade Borosilicate Glass:** Durable, heavy-duty design built to withstand rigorous use and thermal stress.

## Overview

The Karter Scientific 1000ml Glass Round Media Storage Bottles come in a pack of two, crafted from thickened borosilicate glass for exceptional durability and heat resistance up to 140°C. Featuring clear graduated markings and a GL45 blue polypropylene screw cap with a leak-proof, autoclavable seal, these bottles are designed for professional-grade storage, mixing, and sampling in scientific environments.

## 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).

## Features

- Capacity: 1000ml / 32oz.
- Graduations: 100ml, 200ml to 800ml
- Screw Cap: GL45 Blue Polypropylene
- O.D. Height: 100mm x 229mm / 3.9" X 9" (approx.)
- Thickened Borosilicate Glass

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Karter Scientific |
| Part number | 251N7 |
| Item Weight | 1.36 Kilograms |
| Product Dimensions | 9.91 x 9.91 x 22.86 cm; 1.36 kg |
| Item model number | 251N7 |
| Size | 1000ml |
| Color | Pack of 2 |
| Style | PACK OF 2 |
| Finish | Glass |
| Material | Borosilicate Glass |
| Shape | Round |
| Special Features | Leak Proof |
| Specific uses | Storage, Mixing, Sampling |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Karter Scientific
- **Material:** Borosilicate Glass
- **Bottle type:** Media Storage Bottle
- **Colour:** Pack of 2
- **Capacity:** 1000 Milliliters

## Images

![Karter Scientific 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, (Pack of 2) - Image 1](https://m.media-amazon.com/images/I/61UCvIflW4L.jpg)
![Karter Scientific 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, (Pack of 2) - Image 2](https://m.media-amazon.com/images/I/61MfFt2rx+L.jpg)
![Karter Scientific 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, (Pack of 2) - Image 3](https://m.media-amazon.com/images/I/71lQSw5roWL.jpg)
![Karter Scientific 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, (Pack of 2) - Image 4](https://m.media-amazon.com/images/I/71KrPTVaPqL.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

## Frequently Bought Together

- 1000ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, Heavy Duty, Karter Scirentific (Pack of 2)
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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-11*