Burettes Singapore: The Complete 2026 Buying Guide

Published: August 16, 2026 | By JW RESEARCH SUPPLY | Category: Lab Glassware

The burette is the precision instrument of titration — the long, graduated tube with a stopcock at the base that lets you deliver a reagent drop by drop until a reaction endpoint is reached. Unlike a graduated cylinder or a pipette, a burette is built for controlled, incremental dispensing, which is exactly what acid-base, redox, and complexometric titrations demand. Choosing the right burette directly affects the accuracy and repeatability of every titration you run.

At JW RESEARCH SUPPLY, we supply Singapore laboratories with high-quality burettes in bulk. This guide covers the accuracy classes, stopcock materials, manual versus digital options, capacity choices, and how to read and care for your burette.

Types of Burettes

Burettes vary by accuracy class, stopcock material, and whether they are manual or digital:

Class A Burettes — Manufactured to the tightest tolerances (ISO 385 / ASTM E287) and individually certified. The standard for analytical, QC, and regulatory titration.
Class B Burettes — Roughly double the tolerance of Class A. Ideal for routine titration, education, and general preparation.
Glass Stopcock Burettes — Offer the finest flow control and are preferred for precise analytical work, though they need occasional greasing.
PTFE (Teflon) Stopcock Burettes — Never seize and need no grease, making them the low-maintenance choice for routine and alkaline work.
Digital (Electronic) Burettes — Motorised dispensing with a digital readout, reducing reading errors and speeding up high-throughput work.

💡 Quick Rule: Use a Class A burette for analytical and QC titration, a Class B burette for routine prep, a PTFE stopcock for low-maintenance daily use, and a digital burette where speed and reproducibility matter most.

Burette Specifications

The table below summarises the standard burette options JWRESEARCH stocks for Singapore labs:

Burette Type	Capacity Range	Stopcock	Accuracy Class	Typical Application
Class A Glass	10 – 100 mL	Glass or PTFE	Class A (certified)	Analytical, QC, traceable titration
Class B Glass	10 – 100 mL	Glass or PTFE	Class B	Routine titration, education
PTFE Stopcock	10 – 100 mL	PTFE	Class A / B	Alkaline reagents, low-maintenance use
Digital / Electronic	10 – 50 mL	Motorised	High precision	High-throughput dispensing, QC
Schellbach (blue line)	10 – 50 mL	Glass or PTFE	Class A / B	Enhanced meniscus readability

Glass vs PTFE Stopcocks: Which Should You Choose?

The stopcock is the moving part of the burette, and its material affects both precision and maintenance:

Stopcock	Flow Control	Greasing	Seizing Risk	Best For
Glass	Excellent	Required	Higher if left dry	Precision analytical work, organic solvents
PTFE (Teflon)	Very good	None needed	None	Routine work, alkaline reagents, shared labs

For most Singapore laboratories, a PTFE-stopcock burette is the more practical choice — it never seizes, needs no grease, and tolerates alkaline titrants like sodium hydroxide that can attack glass stopcocks over time. Glass stopcocks remain the gold standard for the finest analytical control and for organic solvents, provided you keep them lightly greased.

Capacity Guide

10 mL — Micro-titrations, small sample volumes, and high-precision work.
25 mL — Standard analytical titration, the most common laboratory size.
50 mL — Routine titration with larger sample or titrant volumes.
100 mL — Bulk or macro-titration and large-volume dispensing.

A good rule of thumb: choose the smallest burette that holds your typical titrant volume. A 25 mL or 50 mL burette covers the vast majority of routine titrations in a working laboratory.

How to Read a Burette Accurately

Mount vertically — A tilted burette distorts both the meniscus reading and the drop volume.
Read at eye level — Align your eye with the meniscus to eliminate parallax error.
Read the bottom of the meniscus — For clear liquids, read where the bottom of the curve meets the scale.
Use a Schellbach stripe where helpful — The blue line forms a point at the meniscus, making reading easier and more consistent.
Read to 0.05 mL or finer — Class A 50 mL burettes are typically graduated to 0.1 mL, allowing estimation to 0.01–0.05 mL.

Burette Care and Maintenance

Rinse with titrant before use — Prevents dilution of the titrant by residual water.
Rinse with deionised water after use — Prevents reagent residue from crystallising in the tip.
Drain inverted with the stopcock open — Lets the burette dry fully and prevents contamination.
Grease glass stopcocks lightly — A thin silicone film keeps them turning smoothly without blocking the bore.
Never use abrasives — Scratches on the bore or tip affect accuracy and flow.

Why Choose JWRESEARCH for Burettes in Singapore?

Consistent quality — Burettes are precision-bored and annealed, with crisp, permanent graduations that resist fading and chemical attack.
Full range — From 10 mL to 100 mL, in Class A, Class B, glass-stopcock, PTFE-stopcock, and digital options.
Bulk supply — Single units to full cartons, serving both small research groups and high-throughput QC labs.
Local availability — Inventory ready for fast dispatch within Singapore, with no long overseas lead times.
Competitive pricing — Match-or-beat pricing on name-brand equivalents at 20–40% savings.

Need Burettes for Your Singapore Lab?

Call or email us for a quotation — we respond to all inquiries within one business day. Bulk discounts available for regular orders.

📞 +65 8039 3660 ✉️ SINGAPORE@JWSHY.COM

Frequently Asked Questions

What is the difference between a Class A and Class B burette?

Class A burettes are manufactured to the tighter tolerances set by ISO 385 or ASTM E287 and are individually certified, making them suitable for analytical, QC, and regulatory titration work where accuracy is critical. Class B burettes have roughly double the tolerance of Class A and are perfectly adequate for routine titration, education, and general preparation. Choose Class A for traceable analysis and Class B for everyday bench use.

Should I choose a glass or PTFE stopcock burette?

PTFE (Teflon) stopcocks never seize and require no grease, making them ideal for routine work, alkaline solutions, and shared laboratories where maintenance time is limited. Glass stopcocks offer the finest control and are preferred for precision analytical work and organic solvents, but they need occasional greasing and can seize if left dry. For most Singapore labs, PTFE-stopcock burettes are the more practical, low-maintenance choice.

What is the difference between a manual and a digital burette?

A manual glass burette is the classic choice — inexpensive, precise, and suitable for all standard titrations, with graduations read by eye at the meniscus. A digital (electronic) burette motorises dispensing and gives a digital readout, which reduces reading errors, speeds up repeated dispensing, and improves reproducibility for high-throughput work. Manual burettes are cost-effective for routine labs; digital burettes pay off in busy analytical and QC environments.

How do I clean and maintain a burette?

Rinse the burette with the titrant before use, then after each session rinse thoroughly with deionised water and allow it to drain inverted with the stopcock open. Remove stubborn residue with a mild detergent or a dilute acid, and avoid abrasives that could scratch the glass. If using a glass stopcock, apply a thin film of silicone grease periodically and never leave it dry. Store the burette upright or inverted with the stopcock open to prevent seizing.