---
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: "€ 40.66"
currency: EUR
in_stock: true
reviews_count: 13
category: "Eisco"
url: https://www.desertcart.fi/products/4250502-eisco-lab-clamp-for-lab-stand-beaker-holder-or-flask
store_origin: FI
region: Finland
---

# 3.5-inch wide jaws fit diverse glassware PVC coating resists heat & prevents scratches Die cast alloy for ultimate 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:** € 40.66
**Availability:** ✅ In Stock

## Summary

> 🔬 Secure your science with style and precision!

## 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?** € 40.66 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/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

- • **Heat-Resistant, Scratch-Free Hold:** PVC-coated prongs protect your glassware and withstand short bursts of heat up to 100°C.
- • **360° Swivel Bosshead for Precision:** Easily rotate clamped objects for optimal positioning without removing the setup.
- • **Versatile Grip for Every Experiment:** Wide 3-finger jaws open up to 3.5 inches, securing everything from beakers to flasks with confidence.
- • **Lab-Grade Quality Meets Everyday Use:** Trusted by professionals, perfect for classrooms and home labs—join the elite circle of serious experimenters.
- • **Unmatched Strength & Corrosion Resistance:** Die cast alloy construction built to last in demanding lab environments.

## Overview

The Eisco Lab Clamp features a robust die cast alloy frame with wide 3-finger jaws that open up to 3.5 inches, ideal for holding various lab glassware. Its PVC-coated prongs provide a slip-free, heat-resistant grip that protects delicate equipment. The swivel bosshead allows 360° rotation and fits rods up to 15mm, making it a versatile and durable choice for professional labs, classrooms, and home setups.

## 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 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #30,821 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Lab Beaker Clamps |
| Brand | EISCO |
| Color | Black Metallic |
| Customer Reviews | 4.6 4.6 out of 5 stars (723) |
| Date First Available | January 4, 2013 |
| Global Trade Identification Number | 00849230027957 |
| Included Components | Product |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 5.6 ounces |
| Item dimensions L x W x H | 9 x 2 x 3 inches |
| Item model number | CH0688 |
| Manufacturer | Eisco |
| Material | Die Cast Alloy |
| Part Number | CH0688 |
| Product Dimensions | 9 x 2 x 3 inches |
| Size | 1 Pack |
| Style | Adjustable |
| Tensile Strength | 1500 Pounds Per Square Inch |
| UPC | 849230027957 |

## Product Details

- **Brand:** EISCO
- **Color:** Black Metallic
- **Global Trade Identification Number:** 00849230027957
- **Item Weight:** 0.35 Pounds
- **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)

## 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 Finland*
*Store origin: FI*
*Last updated: 2026-02-05*