Specifications

Dimensions below are the standard production range for burette clamps. Sizes are given as a selection hint only; please check the actual product.

Request custom specs

Burette clamp sizes

Type	Jaw opening (mm)	Positions	Stem length (mm)	Burette (mL)
Spring type	8 ~ 20	Two	150	25 / 50
Screw type	10 ~ 25	Two	160	50 / 100
Single position	8 ~ 20	One	140	25 / 50
Stainless version	10 ~ 22	Two	150	50

Values are typical; reasonable tolerances apply between production batches. Please rely on actual measurement.

📌 Customization:
• Spring or screw jaws selected to order
• Jaw range and stem length can be customised
• Complete sets with retort stand and titration bench available

Product Description

1. Overview

A burette clamp is the dedicated holder for titration work. It fixes the burette vertically on the stand so reading the meniscus does not depend on a steady hand, making it a small part that decides how repeatable the readings are.

Jaws come in spring and screw types. Spring jaws open and close one-handed for quick changes; screw jaws let the gripping force be set and stay firm in long static runs. The inside of the jaw is lined with silicone or rubber, which adds friction so the burette cannot slide and keeps metal away from the glass.

The head swivels and tilts on the stem so the burette can be brought truly vertical with the stand. Selection comes down to matching the jaw range to the burette outer diameter, and the stem bore to the retort stand rod.

🔬 Types & Features:
Two positions — hold two burettes at once for comparison work.
Spring jaws — one-handed opening for quick changes.
Screw jaws — settable grip that stays firm when static.
Silicone sleeves — grip firmly and protect graduations from scratches.

2. Key Parameters

Design: two-position holder
Jaw opening: 8 to 25 mm depending on model
Gripping: spring type or screw type
Sleeve: silicone or rubber
Stem bore: about 10 to 12 mm, fits retort stand rods
Applications: holding burettes and setting verticality

3. Material & Workmanship

The body is machined or cast from metal and finished by chrome plating or coating to resist rust. Jaw sleeves are moulded from silicone or oil-resistant rubber, staying elastic without hardening or cracking.

Handling tip: clamp the straight section above the graduations, away from the scale and the stopcock, and check the jaw is locked before every titration.

Applications

Typical Uses

Acid-base titration

holding the burette truly vertical

Blank comparison

two burettes held at the same time

Batch titration

quick changes between samples

Teaching

demonstrating correct titration practice

Industries

Chemical analysis routine volumetric titration
Food testing acid value and peroxide value titration
Environmental monitoring water pH and chloride titration
Pharmaceutical QC assay titration of active ingredients
Teaching laboratories basic titration training

Selection Guide

Select by burette size

Burette capacity	Outer dia. approx. (mm)	Suggested jaw range
25 mL	12	8 ~ 20
50 mL	14	10 ~ 22
100 mL	18	10 ~ 25

💡 Tips: Match the jaws — the gripped diameter should sit mid-range with margin.
Clamp position — use the straight section above the graduations.
Verticality — check from the front and the side after mounting.
Two hands — hold the burette while locking the jaw to avoid knocks.

Operation & Maintenance

Operation Guide

Clamp position and verticality directly affect titration accuracy. The steps below cover routine mounting and use.

Before Use

Check the jaw sleeve for damage and the spring or screw for smooth travel
Confirm the jaw range suits the burette outer diameter
Confirm the stem bore suits the retort stand rod
Have a boss head ready or fit the clamp directly to the rod
Check the burette for cracks and the stopcock for smooth greasing

Procedure

Fix the clamp to the retort stand rod without locking it yet
Open the jaws and lower the burette in from above
Choose the straight section above the graduations as the gripping point
Tighten the screw or release the spring so the burette cannot slide
Adjust the head angle and height until the burette stands vertical
Check verticality from both the front and the side
Place the receiving vessel below, adding an iron ring if support is needed

Cleaning & Care

Wipe reagent residues off the jaws and stem after use
Wash sleeves with water or a mild detergent
Add a little lubricant to the spring and screw to keep them free
Replace sleeves as soon as they harden or crack
Store without crushing so the jaws keep their shape

💡 Lab veteran tips: Clamp the straight section — away from the stopcock and scale.
Hold before locking — support the burette while tightening.
Check two directions — a single view can hide a tilt.
Not too tight — over-tightening concentrates stress in the glass.

Care & Notes

Show care & notes

⚠️ Safety Notes

Correct tightness

too tight can crack glass, too loose lets it slide

Sleeve condition

replace any damaged sleeve before further use

Verticality

confirm the burette is vertical before reading

Against drops

support the burette while mounting and removing

Do not

Clamp position: avoid the stopcock, graduations and weak points

Burette Clamp

Specifications

Burette clamp sizes

Product Description

1. Overview

2. Key Parameters

3. Material & Workmanship

Applications

Acid-base titration

Blank comparison

Batch titration

Teaching

Selection Guide

Select by burette size

Operation Guide

Before Use

Procedure

Cleaning & Care

Care & Notes

Correct tightness

Sleeve condition

Verticality

Against drops

Need Burette Clamp?

Burette Clamp

Specifications

Burette clamp sizes

Product Description

1. Overview

2. Key Parameters

3. Material & Workmanship

Applications

Acid-base titration

Blank comparison

Batch titration

Teaching

Selection Guide

Select by burette size

Operation Guide

Before Use

Procedure

Cleaning & Care

Care & Notes

Correct tightness

Sleeve condition

Verticality

Against drops

Related Products

Retort Stand

Lab Jack

Universal Clamp & Flask Clamp

Iron Ring & Boss Head

Need Burette Clamp?