---
product_id: 180508071
title: "250ml Narrow Mouth Erlenmeyer Flask with Rubber Stopper, 3.3 Borosilicate Glass, Karter Scientific (Single)"
brand: "karter scientific"
price: "7651 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Karter Scientific"
url: https://www.desertcart.kg/products/180508071-250ml-narrow-mouth-erlenmeyer-flask-with-rubber-stopper-3-3
store_origin: KG
region: Kyrgyzstan
---

# airtight rubber stopper included 250ml precision capacity 3.3 borosilicate glass for thermal & mechanical strength 250ml Narrow Mouth Erlenmeyer Flask with Rubber Stopper, 3.3 Borosilicate Glass, Karter Scientific (Single)

**Brand:** karter scientific
**Price:** 7651 som
**Availability:** ✅ In Stock

## Summary

> 🧬 Elevate your lab game with precision and style!

## Quick Answers

- **What is this?** 250ml Narrow Mouth Erlenmeyer Flask with Rubber Stopper, 3.3 Borosilicate Glass, Karter Scientific (Single) by karter scientific
- **How much does it cost?** 7651 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/180508071-250ml-narrow-mouth-erlenmeyer-flask-with-rubber-stopper-3-3)

## 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

- • **Seamless Sealing:** Solid black rubber stopper ensures airtight containment for your experiments
- • **Effortless Labeling:** Extra-large marking space with durable white enamel graduations for easy identification
- • **Trusted Lab Essential:** Top-rated (#8 in Lab Erlenmeyer Flasks) with 4.5-star reviews from professionals
- • **Engineered for Resilience:** Heavy-duty rims and uniform wall thickness minimize chipping and thermal shock
- • **Precision Meets Durability:** 250ml capacity with clear 25ml graduations for exact measurements

## Overview

The Karter Scientific 250ml Narrow Mouth Erlenmeyer Flask combines high-grade 3.3 borosilicate glass with a solid rubber stopper, delivering exceptional thermal shock resistance and airtight sealing. Designed with heavy-duty rims and clear enamel graduations, it offers durability and precision for professional lab use, making it a top choice among scientific experts.

## Description

Karter Scientific Erlenmeyer Flasks are designed with heavy duty rims to reduce chipping. Their uniform wall thickness provides the proper balance between mechanical strength and thermal shock resistance. Approximate graduations are in durable white enamel. An extra large marking space is also provided. Rubber stopper included. High quality inert 3.3 borosilicate glass.

Review: Good buy - Nice set. Thick glass. It’s exactly what it says it is. The rubber stoppers fit perfectly. I only wished they had the defined shape as the older flasks.
Review: Good beaker - Perfect

## Features

- Capacity: 250ml / 8oz (approx.)
- Rubber Stopper: Solid, Black
- Graduations: 25ml, 100ml to 250ml
- Height: 148mm / 5.8" (approx.)
- Outside Diameter: 85mm 3.4" (approx.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B082LP2DGF |
| Best Sellers Rank | #35,101 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8 in Lab Erlenmeyer Flasks |
| Bottom Shape | Round |
| Brand | Karter Scientific |
| Brand Name | Karter Scientific |
| Capacity | 250 Milliliters |
| Customer Reviews | 4.5 out of 5 stars 365 Reviews |
| Item Dimensions D x W x H | 3.4"D x 3.4"W x 5.8"H |
| Manufacturer | Karter Scientific |
| Material | Borosilicate Glass, Rubber |
| Material Type | Borosilicate Glass, Rubber |
| Product Dimensions | 3.4"D x 3.4"W x 5.8"H |

## Product Details

- **Material:** Borosilicate Glass, Rubber
- **Capacity:** 250 Milliliters
- **Brand:** Karter Scientific
- **Bottom Shape:** Round
- **Product Dimensions:** 3.4"D x 3.4"W x 5.8"H

## Images

![250ml Narrow Mouth Erlenmeyer Flask with Rubber Stopper, 3.3 Borosilicate Glass, Karter Scientific (Single) - Image 1](https://m.media-amazon.com/images/I/61fH6c+G0zL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good buy
*by S***N on December 9, 2025*

Nice set. Thick glass. It’s exactly what it says it is. The rubber stoppers fit perfectly. I only wished they had the defined shape as the older flasks.

### ⭐⭐⭐⭐⭐ Good beaker
*by C***S on November 10, 2025*

Perfect

### ⭐⭐⭐⭐⭐ Quality set of TWO!!
*by B***K on October 12, 2017*

Overall I am satisfied with glassware. Aside from very minor imperfections and finding a large chunk of glass in the 250ml (which scared me as I thought the flask had broken during transit... luckily it was from an unknown source), the glass arrived quickly and as described. The #2 rubber stopper on the other hand was less desirable. The larger stoppers fit well but upon dropping the #2 into the top of the 50ml, it sat down unusually low. I gave the stopper a little press downward to check for a seal (and I'm talking very minimal pressure) and instead the stopper just slid down inside the flask. Perhaps the stopper decided to resize itself correctly once inside the flask (lol) as attempts at retrieving it were futile. That said... I'm still giving a rating of 4 stars, as the set, even minus one, is an amazing deal. Edit 10/20: And 5 stars it is. Thank you Amazon for being amazing and making it right. Never dissatisfied with Amazons customer service.

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**Shop now:** [https://www.desertcart.kg/products/180508071-250ml-narrow-mouth-erlenmeyer-flask-with-rubber-stopper-3-3](https://www.desertcart.kg/products/180508071-250ml-narrow-mouth-erlenmeyer-flask-with-rubber-stopper-3-3)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-13*