Specifications

Double-Jacketed Beaker · Specifications

Below are the standard capacities for the double-jacketed beaker. The jacket can circulate heating or cooling media. For other capacities or special sizes, please contact our sales team.

Enquire About Custom Sizes

Capacity (mL)	Outer Height (mm)	O.D. (mm)	Inner Height (mm)	I.D. (mm)
50	83	60	73	35
100	90	71	78	46
150	120	71	108	55
200	117	80	105	55
250	117	90	103	65
300	133	90	120	65
500	135	110	120	79
1000	195	120	175	95
2000	238	151	215	113

* One threaded nozzle at the top and one at the bottom of the jacket for hose connection and media circulation.
* The outer layer has a flat base; the inner layer is available with a flat or round bottom, giving precise temperature control.
* Combined with a UV light source it can serve as a photocatalytic reactor for degradation and water splitting experiments.

Description

The double-jacketed beaker has a jacketed wall with one threaded nozzle at the top and one at the bottom for hose connection. Heating or cooling media circulate through the jacket to hold the liquid inside at a set temperature. The outer layer has a flat base and sits stably on a bench or magnetic stirrer; the inner layer is available with a flat or round bottom.

Photocatalytic-Reactor Ready

The glass walls are flat and transparent, allowing UV or visible light to pass through evenly. Place a UV light source above or beside the beaker and circulate a constant-temperature medium through the jacket to remove reaction heat — the beaker then works as a photocatalytic reactor for photocatalysis, water splitting, and photocatalytic organic synthesis.

Photocatalytic degradation: jacket cooling suppresses thermal effects and keeps catalyst activity stable.
Water splitting: a constant-temperature jacket stabilises the system for more consistent hydrogen evolution.
Photocatalytic organic synthesis: transparent walls plus magnetic stirring keep light and mass transfer even.
Low-temperature reactions: cooling media in the jacket maintain a low-temperature environment.

Design Features

Jacketed wall: the jacket surrounds the inner cup, so circulating media holds or controls the temperature of the liquid inside.
Threaded nozzles: one at the top and one at the bottom of the jacket for hose connection to a circulation unit.
Flat outer base: the outer layer is flat for stable placement; the inner layer can be flat or round bottom to suit different stirring methods.
Smooth transparent walls: uniform glass walls give good light transmission for observation and light-based experiments.

Material Advantages

Made of Borosilicate Glass 3.3 to ISO 3585. The very low coefficient of thermal expansion (3.3×10⁻⁶/K) resists cracking under rapid temperature change and withstands thermal shocks of up to 280°C, suiting both heating and cooling operations.

Quality Assurance

Every piece is checked for dimensions, stress, and appearance to meet demanding laboratory standards and give your experiments dependable support.

Note: when circulating heating or cooling media through the jacket, change the medium temperature gradually to avoid stress from a large difference across the jacket wall. Keep the liquid volume below 2/3 of capacity to prevent overflow during heating or reaction.

Applications

Typical Setups

Circulator + Jacketed Beaker

Heating or cooling media for constant temperature

UV Light Source + Jacketed Beaker

Light plus constant temperature as a photocatalytic reactor

Magnetic Stirrer + Jacketed Beaker

Stirring for even reaction and mass transfer

Specific Applications

Photocatalysis

Degradation, water splitting, photosynthesis

Constant-Temperature Reactions

Synthesis and catalysis needing precise control

Low-Temperature Reactions

Cooling media in the jacket hold low temperature

Sample Preparation

Temperature-controlled digestion and extraction

Environmental Research

Water treatment and pollutant degradation studies

Materials Science

Performance evaluation of photocatalytic materials

Pharmaceutical R&D

Constant-temperature synthesis and sample prep

Teaching Labs

Demonstrations of photocatalysis and temperature control

Tip: the main advantage of the double-jacketed beaker is that the liquid inside can be held or controlled at temperature. For photocatalytic work, pair the UV light source with jacket circulation — the light drives the reaction while the jacket removes excess heat, and the two together markedly improve reproducibility.

Operation & Care

Using the Double-Jacketed Beaker

Jacket Temperature Control

Before connecting hoses, check that both threaded nozzles on the jacket are intact and the hose bore is clean.
Use distilled water or a dedicated circulation fluid as the medium; avoid tap water that scales easily.
Heat or cool gradually when admitting media, controlling the rate of temperature change to avoid stress in the glass.
Drain the jacket after use to prevent scaling or corrosion from media left standing.

Photocatalytic Operation

Add catalyst and reaction liquid to the inner cup, keeping the volume below 2/3 of the inner capacity.
Circulate a constant-temperature medium through the jacket to hold the reaction at the set temperature.
Place the UV light source above or beside the beaker so the light covers the liquid surface evenly.
With a magnetic stirrer, add the stir bar before the liquid so light and mass transfer stay even.
Avoid directing the light at one spot for long periods, which can overheat locally and affect catalyst activity.

Cleaning & Care

Clean the inner cup and jacket nozzles promptly after use to prevent residue from drying on.
Soak stubborn residue in dilute acid or a dedicated cleaning solution before washing.
Rinse with distilled water and dry inverted on a draining rack.
Store away from hard objects and avoid stress on the threaded nozzles to prevent breakage.

Tip: the jacket is key to temperature control. For photocatalytic work, circulate the medium until the system is stable before switching on the light; when finished, switch off the light first and let the system fall close to room temperature before draining the jacket to extend the beaker's service life.

Care & Notes

Safety Notes

Change the temperature gradually when admitting media, to avoid cracking from a large difference across the jacket.
Inspect the beaker for cracks or scratches before use; a flawed beaker may break under temperature change.
Wear protective eyewear when using a UV light source, and avoid direct exposure of eyes and skin.

Prohibited

Double-Jacketed Beaker

Specifications