---
product_id: 73500702
title: "Laboy Dean-Stark Water Separator, 5mL, 19/22, 2mm PTFE Stopcock | 5mL graduated trap | Top Outer Joint | Return-arm Inner Joint | 2mm PTFE stopcock | 19/22"
brand: "laboy"
price: "3654357₫"
currency: VND
in_stock: true
reviews_count: 4
url: https://www.desertcart.vn/products/73500702-laboy-dean-stark-water-separator-5ml-19-22-2mm-ptfe
store_origin: VN
region: Vietnam
---

# 5mL precision graduated receiver Vacuum-tight 19/22 standard taper joints 600°C annealed heavy-wall borosilicate Laboy Dean-Stark Water Separator, 5mL, 19/22, 2mm PTFE Stopcock | 5mL graduated trap | Top Outer Joint | Return-arm Inner Joint | 2mm PTFE stopcock | 19/22

**Brand:** laboy
**Price:** 3654357₫
**Availability:** ✅ In Stock

## Summary

> ⚗️ Elevate your distillation game with precision and durability that professionals swear by!

## Quick Answers

- **What is this?** Laboy Dean-Stark Water Separator, 5mL, 19/22, 2mm PTFE Stopcock | 5mL graduated trap | Top Outer Joint | Return-arm Inner Joint | 2mm PTFE stopcock | 19/22 by laboy
- **How much does it cost?** 3654357₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/73500702-laboy-dean-stark-water-separator-5ml-19-22-2mm-ptfe)

## Best For

- laboy enthusiasts

## Why This Product

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

## Key Features

- • **Thermal Shock Titan:** Annealed at 600°C for unmatched durability under extreme lab conditions.
- • **Seamless Integration:** Standard 19/22 taper joints guarantee leak-proof, secure connections with your existing glassware.
- • **Contamination-Free Flow:** 2mm PTFE stopcock offers self-lubrication and chemical inertness—no grease, no hassle.
- • **Precision Volume Control:** 5mL graduated receiver ensures exact distillate measurement every time.
- • **Optimized for Azeotropic Distillation:** Engineered specifically to separate water continuously, accelerating your reaction efficiency.

## Overview

The Laboy Glass Dean Stark Distillation Receiver Trap is a premium 5mL borosilicate glass apparatus, annealed at 600°C for superior thermal shock resistance. Featuring vacuum-tight 19/22 standard taper joints and a chemically inert 2mm PTFE stopcock, it enables precise, contamination-free azeotropic distillation and essential oil extraction with reliable volume measurement.

## Description

The dean stark distillation receiver is for easy separation of water from reaction or distillation system, can be used in essential oil extraction. With 19/22 joints, graduated with 2mm PTFE stopcock.205mm in Height and 75mm in width. Laboy glassware is made of high-quality borosilicate glass and annealed at 800 degree Celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling.

Review: Underrated essential lab equipment - A dean stark trap has never been on my radar until I was steam distilling an essential oil that I discovered is mysteriously is heavier than water. I bought one for that reason, but have realized what a versatile piece of equipment it actually is. Need to do a distillation but don’t have enough room? Take one stand with two clamps and you can set up a distillation using a Dean stark and a Liebig column vertically and the footprint is barely larger than your mantle. Leave the stopcock open and use some tubing to direct your distillate where you need it to go. Need to do a fractional distillation but don’t want to continuously be watching the thermometer? Leave the stopcock closed and do your thing. Dean stark with a reflux column on it will continue to reflux if you forget about it. Just dump the stopcock occasionally and the worst you can overshoot is ~30ml so you don’t have to run the entire fraction again. While not as efficient as a vigreux column, the Dean stark does offer a bit of separation because the vertical piece is long enough for some higher boiling point fractions to condense before going over to the reflux column above. Not sure when your solvent is going to distill off? Fill the graduated column with fresh solvent and dump off 5-10ml at a time and look for biphasic separation (if immiscible) or refractive changes (if miscible). Don’t have/don’t want to clean/use a claisen adapter to keep adding your reaction mixture to the distillation/reflux? Pour it right in the top, dump the graduated section, replace your solvent and keep distilling. DISCLAIMER: I’m a total hack self-taught chemist, so please, PLEASE, consider that if you’re crazy enough to take my advice, but I would say this is one of the most used items in my lab!
Review: A bargain for a Dean and Stark with great quality - Fast shipping of a good quality apparatus. Very affordable as well. Others on desertcart are in the hundreds range.

## Features

- Application: Designed for small-scale reactions and lower expected water volumes, including esterification and other reflux workflows that benefit from continuous collection of water formed during the reaction.
- Connection and Capacity: The top 19/22 Outer Joint accepts a matching condenser Inner Joint, the return-arm 19/22 Inner Joint fits a matching flask Outer Joint, and the graduated receiver holds 5mL.
- Core Benefit: The condensed mixture separates in the receiver so the denser aqueous phase remains available for monitoring or draining while the lighter organic phase returns to the reaction flask, supporting uninterrupted azeotropic reflux.
- Recommended Assembly: Pair with an HMC0125 Liebig condenser or HMC0122 Allihn condenser, an HMF0113 two-neck round-bottom flask or HMF0114 three-neck round-bottom distilling flask, and an LB700 magnetic stir bar; companion components are sold separately.
- Material and Safety: Heavy-wall 3.3 Borosilicate Glass meeting ASTM E438 Type I, Class A. Confirm the solvent and water form separate phases with the organic phase on top, secure every joint, maintain coolant flow, use in a fume hood, and never operate the reflux apparatus as a sealed pressurized system.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B018926CX4 |
| Best Sellers Rank | #350,932 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #214 in Lab Distillation Apparatus #11,690 in Lab Instruments & Equipment |
| Bottom Shape | Round |
| Brand | LABOY |
| Brand Name | LABOY |
| Capacity | 5 ml |
| Customer Reviews | 5.0 out of 5 stars 11 Reviews |
| Item Highlight | 5mL graduated trap | Top Outer Joint | Return-arm Inner Joint | 2mm PTFE stopcock | 19/22 |
| Item Weight | 1 g |
| Manufacturer | Laboy |
| Material | Borosilicate Glass |
| Material Type | Borosilicate Glass |
| Model Number | HMD013402 |
| Number of Items | 1 |
| Part Number | HMD013402 |
| Specification Met | Astm |
| Unit Count | 1 Count |

## Product Details

- **Bottom Shape:** Round
- **Brand:** LABOY
- **Capacity:** 5 ml
- **Material:** Borosilicate Glass
- **Specification Met:** Astm

## Images

![Laboy Dean-Stark Water Separator, 5mL, 19/22, 2mm PTFE Stopcock | 5mL graduated trap | Top Outer Joint | Return-arm Inner Joint | 2mm PTFE stopcock | 19/22 - Image 1](https://m.media-amazon.com/images/I/3163dN2cBUL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Underrated essential lab equipment
*by J***R on September 9, 2023*

A dean stark trap has never been on my radar until I was steam distilling an essential oil that I discovered is mysteriously is heavier than water. I bought one for that reason, but have realized what a versatile piece of equipment it actually is. Need to do a distillation but don’t have enough room? Take one stand with two clamps and you can set up a distillation using a Dean stark and a Liebig column vertically and the footprint is barely larger than your mantle. Leave the stopcock open and use some tubing to direct your distillate where you need it to go. Need to do a fractional distillation but don’t want to continuously be watching the thermometer? Leave the stopcock closed and do your thing. Dean stark with a reflux column on it will continue to reflux if you forget about it. Just dump the stopcock occasionally and the worst you can overshoot is ~30ml so you don’t have to run the entire fraction again. While not as efficient as a vigreux column, the Dean stark does offer a bit of separation because the vertical piece is long enough for some higher boiling point fractions to condense before going over to the reflux column above. Not sure when your solvent is going to distill off? Fill the graduated column with fresh solvent and dump off 5-10ml at a time and look for biphasic separation (if immiscible) or refractive changes (if miscible). Don’t have/don’t want to clean/use a claisen adapter to keep adding your reaction mixture to the distillation/reflux? Pour it right in the top, dump the graduated section, replace your solvent and keep distilling. DISCLAIMER: I’m a total hack self-taught chemist, so please, PLEASE, consider that if you’re crazy enough to take my advice, but I would say this is one of the most used items in my lab!

### ⭐⭐⭐⭐⭐ A bargain for a Dean and Stark with great quality
*by B***S on May 25, 2019*

Fast shipping of a good quality apparatus. Very affordable as well. Others on amazon are in the hundreds range.

### ⭐⭐⭐⭐⭐ As described
*by D***D on November 21, 2019*

I love Laboy they're the very best.

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-10-26*