---
product_id: 4250502
title: "Eisco Lab Clamp for Lab Stand, Beaker Holder or Flask Clamp - Heat Resistant PVC Coated Prongs for Holding Objects up to 3.5 Inch Diameter - Boss Head Connects to Lab Stand Rods"
brand: "eisco"
price: "£18.05"
currency: GBP
in_stock: true
reviews_count: 13
category: "Eisco"
url: https://www.desertcart.co.uk/products/4250502-eisco-lab-clamp-for-lab-stand-beaker-holder-or-flask
store_origin: GB
region: Great Britain
---

# 3.5-inch wide jaws fit diverse glassware Heat-resistant PVC coating up to 100°C Die cast alloy for unmatched durability Eisco Lab Clamp for Lab Stand, Beaker Holder or Flask Clamp - Heat Resistant PVC Coated Prongs for Holding Objects up to 3.5 Inch Diameter - Boss Head Connects to Lab Stand Rods

**Brand:** eisco
**Price:** £18.05
**Availability:** ✅ In Stock

## Summary

> 🔬 Clamp in Confidence — Hold Tight, Work Smart!

## Quick Answers

- **What is this?** Eisco Lab Clamp for Lab Stand, Beaker Holder or Flask Clamp - Heat Resistant PVC Coated Prongs for Holding Objects up to 3.5 Inch Diameter - Boss Head Connects to Lab Stand Rods by eisco
- **How much does it cost?** £18.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/4250502-eisco-lab-clamp-for-lab-stand-beaker-holder-or-flask)

## Best For

- eisco enthusiasts

## Why This Product

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

## Key Features

- • **360° Swivel Flexibility:** Swivel bosshead rotates clamped objects fully, enabling precise positioning and seamless workflow on rods up to 15mm diameter.
- • **Safe & Scratch-Free Clamping:** PVC-coated prongs ensure a slip-free, secure hold without damaging delicate glassware, with heat resistance for short high-temp tasks.
- • **Lab-Grade Quality for Every Setting:** Trusted by professionals and educators alike, this clamp elevates your lab, classroom, or home science setup with industrial strength and sleek design.
- • **Versatile Hold for Every Experiment:** Wide 3-finger jaws open to 3.5 inches, accommodating a broad range of beakers, flasks, and lab glassware with ease.
- • **Unbreakable Grip, Unmatched Strength:** Die cast alloy construction delivers corrosion resistance and supports up to 1500 PSI tensile strength for professional-grade reliability.

## Overview

The Eisco Lab Clamp features a robust die cast alloy frame with PVC-coated prongs that hold objects up to 3.5 inches in diameter securely and scratch-free. Its swivel bosshead allows 360° rotation on rods up to 15mm, making it ideal for professional labs, classrooms, and home experiments. Heat-resistant and corrosion-proof, this clamp combines durability with versatile functionality for all your scientific needs.

## Description

desertcart.com: Eisco Lab Clamp for Lab Stand, Beaker Holder or Flask Clamp - Heat Resistant PVC Coated Prongs for Holding Objects up to 3.5 Inch Diameter - Boss Head Connects to Lab Stand Rods : Industrial & Scientific

Review: Really great. Quality. I'm buying more. - Really great. Very adjustable, quality and nice looking. I bought 2. I think I'll get 2 more. I use 3/8th all-thread to make a simple grid in my booth.
Review: Great design! - As a high school science instructor, these work fantastic! I strongly encourage this design for chemistry setups.

## Features

- DIE CAST ALLOY || Die cast alloy construction is strong and corrosion-resistant
- WIDE JAWS || 3-finger jaws on clamp open to 3.5” (90mm) wide for holding a wide range of glassware sizes and volumes
- PVC COATED PRONGS || PVC-coated prongs provide a strong, slip-free hold that won’t scratch objects. PVC coating can withstand heat up to 100°C for short periods of time but it is recommended you remove the PVC coating for extreme temperature uses
- SWIVEL BOSSHEAD || Swivel bosshead for rotating clamped objects 360°. Bosshead attaches to rods up to 15mm in diameter. Clamp extends out approximately 5" from rod (not adjustable)
- GREAT FOR PROFESSIONAL LABORATORIES, CLASSROOMS & HOUSEHOLD || Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00AWS3QV0 |
| Best Sellers Rank | #27,930 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Lab Beaker Clamps |
| Brand Name | EISCO |
| Color | Black Metallic |
| Customer Reviews | 4.6 4.6 out of 5 stars (724) |
| Global Trade Identification Number | 00849230027957 |
| Included Components | Product |
| Item Dimensions | 9 x 2 x 3 inches |
| Item Weight | 5.6 ounces |
| Manufacturer | Eisco |
| Material Type | Die Cast Alloy |
| Model Number | CH0688 |
| Style Name | Adjustable |
| Tensile Strength | 1500 Pounds Per Square Inch |
| UPC | 849230027957 |

## Product Details

- **Brand:** EISCO
- **Color:** Black Metallic
- **Global Trade Identification Number:** 00849230027957
- **Item Weight:** 5.6 ounces
- **Item dimensions L x W x H:** 9 x 2 x 3 inches
- **Manufacturer:** Eisco
- **Material:** Die Cast Alloy
- **Style:** Adjustable
- **Tensile Strength:** 1500 Pounds Per Square Inch
- **UPC:** 849230027957

## Images

![Eisco Lab Clamp for Lab Stand, Beaker Holder or Flask Clamp - Heat Resistant PVC Coated Prongs for Holding Objects up to 3.5 Inch Diameter - Boss Head Connects to Lab Stand Rods - Image 1](https://m.media-amazon.com/images/I/61Nuf5WUDUL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does anyone have expereince and know the max size beaker this can fit?  100ml, 150ml, 250ml, or 400ml?**
A: The width of the fully opened prongs is about 9.4 cm, so it should fit up to 400 ml and possibly even 600 ml Pyrex beaker.

**Q: what is the maximum diameter (clearance) of the rod where the head can fit?**
A: 15mm diameter

**Q: How long is it?  How short can it be adjusted to?**
A: It is a fixed length  so you will need to adjust your set up. Measure from the plate w/flat screw head to the base of the 3 prongs, there is also a fine ajustment flange screw on the shaft between the 2 points you measured from to start .  Hope it helps. Steve

**Q: How far from the vertical rod is the gripping point? In other words, if grasping a test tube, what is the clearance between it and the vertical rod?**
A: For a test tube and a vertical rod each having a diameter of about 5/8 inch (1.6 cm), the clearance will be approximately 5.4 inches (13.7 cm).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Really great. Quality. I'm buying more.
*by G***M on April 21, 2025*

Really great. Very adjustable, quality and nice looking. I bought 2. I think I'll get 2 more. I use 3/8th all-thread to make a simple grid in my booth.

### ⭐⭐⭐⭐⭐ Great design!
*by A***R on January 18, 2026*

As a high school science instructor, these work fantastic! I strongly encourage this design for chemistry setups.

### ⭐⭐⭐⭐⭐ Good quality.
*by I***6 on September 11, 2019*

These work very well and the PVC makes for a nice grip. Just know that you should not have it holding something like a distillation flask opening as the PVC will melt a bit. You can probably remove the PVC grips if you want to hold a piece of glassware that will be hot, but I have not tried this yet. It would probably be better just to get a cheaper one without PVC if you need that.

## Frequently Bought Together

- EISCO CH0688 Labs Clamp Retort, 3 PVC Coated Prongs (Opens to 90mm in Dia.) with Boss Head
- EISCO Chemical Resistant Steel Ring Stand Set - Lab Stand Support with Clamp - 8 Inch x 5 Inch Base, 24 Inch Rod - Use as Glass Funnel Stand or Test Tube Holder
- EISCO Burette Clamp with Bosshead/Test Tube Holder - PVC Coated Round Jaws, Opens up to 45mm

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*Product available on Desertcart Great Britain*
*Store origin: GB*
*Last updated: 2026-04-23*