---
product_id: 647633639
title: "Glass Equalizing Dropping Funnel,Constant Pressure Funnel with PTFE Stopcock Chemistry Laboratory Glassware (25ml,19/22 Joint)"
brand: "adamas-beta"
price: "€ 62.63"
currency: EUR
in_stock: false
reviews_count: 3
category: "Adamas Beta"
url: https://www.desertcart.fi/products/647633639-glass-equalizing-dropping-funnel-constant-pressure-funnel-with-ptfe-stopcock
store_origin: FI
region: Finland
---

# Pressure-equalizing design 25ml precision capacity Durable high-quality glass Glass Equalizing Dropping Funnel,Constant Pressure Funnel with PTFE Stopcock Chemistry Laboratory Glassware (25ml,19/22 Joint)

**Brand:** adamas-beta
**Price:** € 62.63
**Availability:** ❌ Out of Stock

## Summary

> ⚗️ Elevate your lab game with flawless flow and precision control!

## Quick Answers

- **What is this?** Glass Equalizing Dropping Funnel,Constant Pressure Funnel with PTFE Stopcock Chemistry Laboratory Glassware (25ml,19/22 Joint) by adamas-beta
- **How much does it cost?** € 62.63 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/647633639-glass-equalizing-dropping-funnel-constant-pressure-funnel-with-ptfe-stopcock)

## Best For

- adamas-beta enthusiasts

## Why This Product

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

## Key Features

- • **Premium Durability:** Crafted from high-quality glass to withstand typical lab thermal variations and daily use.
- • **Risk-Free Purchase:** Fragile? No worries—dedicated warranty ensures satisfaction or replacement.
- • **Inert Atmosphere Ready:** Perfect for sensitive reactions requiring constant pressure without opening the stopper.
- • **Versatile Size Options:** Available in multiple capacities and joint sizes to fit your exact laboratory setup.
- • **Seamless Pressure Balance:** Innovative narrow-bore tube equalizes pressure for smooth, uninterrupted liquid flow.

## Overview

The ADAMAS-BETA Glass Equalizing Dropping Funnel (25ml, 19/22 Joint) features a pressure-equalizing narrow-bore tube that maintains constant pressure between the funnel and reaction flask, enabling smooth liquid transfer without opening the stopper. Made from durable, high-quality glass, it supports inert atmosphere reactions and withstands typical lab thermal changes. Available in multiple sizes and joints, it’s a reliable, professional-grade tool designed for precision and ease in chemical processes.

## Description

ADAMAS-BETA Glass Equalizing Dropping Funnel,Constant Pressure Funnel with PTFE Stopcock Chemistry Laboratory Glassware (25ml,19/22 Joint): desertcart.com: Industrial & Scientific

Review: At this price point, a nice piece - This was a gift to me and it has 19/24 joints which don't match my other glass but an adapter took care of that. Aesthetically it is a nice piece. Pretty well formed, nice joints, easy to read. It's square and concentric the peacock is smooth operating. More so than most of my glass. The glass I would call medium thickness. It's not a heavy piece but doesn't feel fragile. A solid, functional, low cost piece that does the job without problems
Review: Works as it should and well made. - Works as it should and well made. They also do a great job of packing it as I always worry about working this type of item but they do a great job of making sure it will make it to you without getting broken.

## Features

- Design: Comparing to an ordinary dropping funnel, the pressure-equalizing dropping funnels have an additional narrow-bore glass tube from the upper part of the funnel bulb to the ground glass joint around the stem at bottom. The pressures in the reservoir and the reaction flask are equal, and liquid will flow into the reaction flask even when the stopper is in place in the funnel. Pressure-equalizing dropping funnels are normally only used for inert atmosphere reactions.
- Advantage: When adding liquid to an ordinary separatory funnel, it is necessary to open the stopper on the upper end of the funnel or align the groove on the stopper with the small hole on the bottle mouth, so that the liquid in the funnel can flow down smoothly. While the constant pressure dropping funnel has an upper connected tube, which can balance the air pressure without opening the stopper.
- High Quanlity: Made of high-quality glass, durable and of high quality, can withstand typical laboratory thermal variations in Chemistry processes.
- Multiple sizes: Capacity 10ml,25ml,60ml,125ml,250ml,500ml,1000ml; joints 14/20,19/22,24/40,14/22. Various specifications are availiable for your choice.
- Warranty: Glassware is fragile, if received damaged, please don't hesitate to contact us, we will solve it until satisfied.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SKS9M8S |
| Best Sellers Rank | #472,873 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Lab Addition Funnels |
| Date First Available | February 16, 2022 |
| Item Weight | 8.1 ounces |
| Item model number | 02060258 |
| Manufacturer | ADAMAS-BETA |
| Package Dimensions | 3.94 x 1.97 x 1.97 inches |

## Product Details

- **Brand:** ADAMAS-BETA
- **Color:** 25ml,19/22 Joint
- **Manufacturer:** ADAMAS-BETA
- **Material:** Glass

## Images

![Glass Equalizing Dropping Funnel,Constant Pressure Funnel with PTFE Stopcock Chemistry Laboratory Glassware (25ml,19/22 Joint) - Image 1](https://m.media-amazon.com/images/I/51PqfsRS0EL.jpg)
![Glass Equalizing Dropping Funnel,Constant Pressure Funnel with PTFE Stopcock Chemistry Laboratory Glassware (25ml,19/22 Joint) - Image 2](https://m.media-amazon.com/images/I/51VkS1K0xUL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ At this price point, a nice piece
*by C***S on September 5, 2023*

This was a gift to me and it has 19/24 joints which don't match my other glass but an adapter took care of that. Aesthetically it is a nice piece. Pretty well formed, nice joints, easy to read. It's square and concentric the peacock is smooth operating. More so than most of my glass. The glass I would call medium thickness. It's not a heavy piece but doesn't feel fragile. A solid, functional, low cost piece that does the job without problems

### ⭐⭐⭐⭐⭐ Works as it should and well made.
*by O***R on January 15, 2025*

Works as it should and well made. They also do a great job of packing it as I always worry about working this type of item but they do a great job of making sure it will make it to you without getting broken.

### ⭐ Did not come with stopcock, only glass
*by A***. on July 28, 2023*

It didn’t come with any stopcock like advertised. Only the glass addition funnel itself. Ordered a replacement, and it too did not have the stopcock. False advertising.

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-18*