Specifications

Component List

All components listed below are included in this kit. Items marked Optional can be customized.

Component	Standard Spec	Upgrade Options	Qty	Link
Please contact us to confirm the available specifications.

📌 Customization Notes:
• Iron stand: Standard (6×9 inch) or Heavy-duty base
• Rod height: 24 inch (standard), 30 inch
• Universal clamp upgrade: Nylon-coated jaws (non-slip, glass-safe)
• Iron ring sizes can be selected based on the diameter of your vessels
• Mix and match — no minimum order quantity

💡 Recommended Add-Ons: Rubber stoppers · Anti-slip pads · Spare universal clamps · Iron rings in different sizes

Product Description

I. The Iron Stand — The "Skeleton" of Any Lab Setup

The iron stand provides support and fixing for laboratory apparatus — without it, flasks, condensers, and funnels can't be properly positioned. A reliable iron stand needs three things: a stable base, a straight rod, and dependable clamps.

This set features a cast iron base + stainless steel rod construction. The 6×9 inch base (approx. 15×23cm) includes anti-slip rubber pads, and the 24 inch rod (approx. 60cm) is standard height. All clamps are chrome-plated — rust-resistant and corrosion-resistant — with adjustable clamping force to meet the needs of most routine experiments.

✦ Iron Stand Selection Guide:

6×9 inch (standard) — For 250ml–1L flasks — most common choice
Heavy-duty base — For 2L+ large setups or complex apparatus with multiple clamps
24 inch rod — Standard height, fits the majority of lab setups
30+ inch rod — For setups requiring higher mounting positions (e.g., fractionating columns)

II. Clamp Types & Uses

Universal Clamp — The most commonly used clamp; grips cylindrical vessels like condensers, flask necks, and test tubes. The jaws rotate for flexible positioning.
Flask Clamp — Three-prong design specifically for gripping the necks of round-bottom and Erlenmeyer flasks. Provides strong, non-slip clamping.
Cross Clamp — Connects clamps to the iron stand — one end goes on the rod, the other holds the clamp shaft. 360° angle adjustment.
Butterfly Clamp — For holding rubber or flexible tubing — prevents disconnection.
Iron Ring — Slides onto the stand to support funnels, evaporating dishes, and beakers without clamping.

III. Material & Workmanship

The iron stand base is cast iron with a painted finish — heavy, stable, and resistant to tipping. The rod is stainless steel (or chrome-plated carbon steel) with good straightness and a smooth surface. Clamps are chrome-plated carbon steel with molded non-slip gripping surfaces — they hold firmly without damaging glass. All metal components are treated for rust resistance and long service life.

Applications

Typical Applications

Distillation Support

Securing distillation flasks and condensers — ensuring vertical, stable setups

Reflux Setup

Holding round-bottom flasks and spherical condensers

Filtration Clamping

Supporting funnels and receiving vessels

Titration

Holding burettes and Erlenmeyer flasks

Gas Generation

Fixing flasks, dropping funnels, and gas delivery tubes

Teaching Labs

Essential support equipment for high school and university chemistry labs

Object to Clamp	Recommended Clamp	Notes
Please contact us to confirm the available specifications.

Flask Volume	Recommended Base	Recommended Clamps
Please contact us to confirm the available specifications.

Operation & Maintenance

User Guide

An iron stand may seem simple, but stable setup and secure clamping require proper technique. Here are the essentials.

🚨 Three rules to remember:
① Install rings first, then clamps — bottom to top
② Don't overtighten clamps — just enough to hold, overtightening cracks glass
③ The center of gravity must be over the base — offset weight causes tipping

I. Before You Start

Check that the iron stand sits flat on the benchtop — no wobbling
Check the rod for bends or rust
Check that clamp threads move smoothly and gripping surfaces are intact
Confirm the bench surface is level and dry — a wet surface can cause the stand to slip

Standard assembly steps

Place the iron stand on a stable, level surface, with the base fully contacting the bench
Install iron rings on the rod from bottom to top as needed
Slide cross clamps onto the rod and tighten just enough to prevent slipping — don't overtighten
Insert universal or flask clamps into the cross clamps, adjust the angle, and secure
Place the glass vessel into the clamp jaws and tighten slowly until just secure

III. Clamping Operation

Universal Clamp: For cylindrical vessels like condensers, test tubes, and flask necks. Jaws open to about 2.5cm — apply even pressure, not one-sided.
Flask Clamp: Specifically for flask necks. The three-prong design applies balanced pressure to the neck — secure, non-slip. Suitable for 250ml–2L flasks.
Clamping Force: Just tight enough to prevent movement when gently shaken. Too tight cracks glass; too loose and the apparatus slips or falls.

IV. Apparatus Balance

The center of gravity must fall within the base footprint — offset weight causes tipping
Heavy items (large flasks, heating mantles) should be mounted near the center of the base
For heavy or high-center-of-gravity setups, use a heavy-duty base or add counterweight

V. Shutdown & Maintenance

After the experiment, remove the glassware first, then loosen the clamps
Remove clamps from the stand and wipe off any moisture to prevent rust
If any liquid spills on the iron stand, wipe it dry immediately
For long-term storage, apply a thin coat of rust-preventive oil to metal parts (chrome-plated parts generally don't need this)

📌 Cross Clamp Tips:

A cross clamp has two perpendicular holes — one fits over the stand rod, the other holds the clamp shaft.
Installation order: Slide onto rod → Insert clamp shaft → Adjust angle → Tighten both screws.
Angle adjustment: Cross clamps rotate 360° — adjust before tightening.

💡 From a Seasoned Lab Hand:

"Clamp tightness is about feel — just enough that it doesn't slip, but not so tight that you can't move it." Overtightening is the most common mistake new users make — cracked glassware is the result.
Universal clamp angle: When holding a condenser, the jaws should grip perpendicular to the condenser axis for maximum contact area and stability.
Flask clamp use: Position the three prongs evenly around the neck — don't rely on just two prongs.
Storage tip: After use, remove clamps from the rod to prevent spring fatigue. Loosen cross clamp screws to prevent threads from seizing.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

Clamps are not a substitute for hands

They secure the apparatus, but you still need to watch for loosening during heating

Cracked glassware is unsafe

Clamping force can enlarge cracks and cause breakage

The stand base must be fully on the bench

A hanging base risks tipping

Clamps get hot during heating

Wear heat-resistant gloves when handling hot apparatus

Clamp springs have fatigue limits

Clamping force decreases with long-term use — replace as needed

Iron Stand & Clamp Set

Specifications

Component List

Product Description

I. The Iron Stand — The "Skeleton" of Any Lab Setup

II. Clamp Types & Uses

III. Material & Workmanship

Applications

Distillation Support

Reflux Setup

Filtration Clamping

Titration

Gas Generation

Teaching Labs

User Guide

I. Before You Start

Standard assembly steps

III. Clamping Operation

IV. Apparatus Balance

V. Shutdown & Maintenance

Care & Notes

Clamps are not a substitute for hands

Cracked glassware is unsafe

The stand base must be fully on the bench

Clamps get hot during heating

Clamp springs have fatigue limits

Need This Apparatus Kit?

Iron Stand & Clamp Set

Specifications

Component List

Product Description

I. The Iron Stand — The "Skeleton" of Any Lab Setup

II. Clamp Types & Uses

III. Material & Workmanship

Applications

Distillation Support

Reflux Setup

Filtration Clamping

Titration

Gas Generation

Teaching Labs

User Guide

I. Before You Start

Standard assembly steps

III. Clamping Operation

IV. Apparatus Balance

V. Shutdown & Maintenance

Care & Notes

Clamps are not a substitute for hands

Cracked glassware is unsafe

The stand base must be fully on the bench

Clamps get hot during heating

Clamp springs have fatigue limits

Related Apparatus Kits

Simple Distillation

Reflux Apparatus

Vacuum Filtration

Liquid-Liquid Extraction

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