Zhichu

ZHICHU'S PRECISE LABORATORY-SCALE BENCHTOP BIOREACTOR OR FERMENTOR TANK

2026-11-04T03:37:00+02:00

A benchtop bioreactor co2 (also known as a fermentor tank in microbial /cell applications) is a compact, laboratory-scale vessel designed for the controlled cultivation of microorganisms, cells, or tissues under optimized conditions. Benchtop fermentor provides a controlled environment to regulate critical parameters such as temperature, pH, dissolved oxygen (DO), agitation, and nutrient supply, enabling efficient growth and production of biological products. Benchtop bioreactors, like those developed by Zhi Chu, are typically small (e.g., 1–50L capacities), portable, and suited for research and development in laboratory settings, making Zhi Chu a trusted name in lab scale commercial bioreactor innovation.

Key Components and Control Parameters of Benchtop Biostat Reactor Systems

Vessel: Usually made of stainless steel (e.g., 316L) or glass, housing the culture medium and organisms. This is a common vessel design for a bench-scale bioreactor biology.

Control System: Often a programmable logic controller (PLC) with a touch screen interface to monitor and adjust parameters like pH, DO, temperature, and agitation speed.

Agitation System: Impellers or stirring paddles ensure uniform mixing and nutrient distribution.

Sensors and Probes: Measure pH, DO, temperature, and other variables in real-time.

Pumps and Feeding Systems: Peristaltic pumps deliver nutrients, acids, bases, or defoaming agents.

Sterilization Features: Autoclavable or in-situ sterilization to maintain a contamination-free environment.

Benchtop bioreactors are versatile, supporting both microbial fermentation (e.g., bacteria, yeast) and cell culture (e.g., mammalian, insect, or plant cells), with configurations tailored to specific applications (e.g., aerobic/anaerobic, suspension/microcarrier cultures). This adaptability makes lab bioreactors essential tools in biotechnology research.

QF AND QC CONTROL-PARAMETER COMPARISON

A benchtop fermenter should be selected from the complete control architecture rather than maximum vessel volume or maximum rpm alone. Compare pH control, dissolved oxygen control, agitation, impeller type, gas delivery, feeding, temperature regulation, data recording, and utilities under the same process requirements.

Selection Parameter	BIOCORE QF Microbial Series	BIOCORE QC Cell-Culture Series	Selection Consideration
Published culture route	Microbial cultivation and fermentation	Animal, insect, and plant cell culture	Select the series from the biological process before selecting vessel size
Working volume	2.1, 3.5, 5.5, or 11 L	0.9–2.1, 1.5–3.5, 2–5, or 4–11 L	Confirm both starting and maximum liquid volume
pH measurement	Hamilton Arc electrode; 0–12 pH; ±0.01 accuracy	Mettler/Hamilton electrode; 0–12 pH; ±0.01 accuracy	Confirm the supplied probe brand and replacement requirements
Published pH cascade	Alkali and acid	Alkali and CO₂	Match the cascade to the culture and media strategy
DO measurement	Hamilton Arc optical electrode; 0–200%; ±1% accuracy	Mettler/Hamilton probe; 0–200%; ±1% accuracy	Confirm the measurement principle and probe configuration
Published DO cascade	Rotational speed	O₂, N₂, air, gas flow, and agitation speed	Cell culture may require a more complex gas-control sequence
Agitation speed	20–1000 rpm	20–300 rpm	Select according to mixing demand and shear sensitivity
Published impeller	Double-layer six-bladed propeller	Bed agitator, propeller agitator, or lift agitator	Confirm which agitator is supplied with the quoted model
Gas control	Air with solenoid-valve control and rotameter flow measurement	Four-gas control using N₂, O₂, CO₂, and air with a thermal mass-flow controller	Do not assume that both platforms have the same gas-control hardware
Published gas-flow entry	0.1–10 L/min or 0.1–25 L/min, depending on configuration	0.1–1 L/min	Confirm the model-specific flow range in the technical quotation
Liquid feeding	Adjustable peristaltic pump, 0–180 rpm	Fixed-function peristaltic pump, 30 rpm, using 0–100% duty-cycle control	Compare pump functions, quantity, flow calibration, and tubing
Temperature measurement	Pt100 with PID control	Pt100 with PID control	Confirm required setpoint, cooling-water conditions, and actual operating range
Published temperature accuracy	0.1°C display entry and ±0.1°C control-accuracy entry	0.1°C display entry and ±0.1°C control-accuracy entry	Evaluate accuracy under the required process conditions
Control and data	PLC with specialized fermentation program; external USB	PLC with specialized fermentation program; USB export	Confirm exported fields, file format, sampling interval, and batch-record requirements
Expansion units listed	Exhaust CO₂/O₂ analysis, biomass turbidity, glucose measurement, feeding, and weighing	Exhaust CO₂/O₂ analysis, biomass turbidity, glucose measurement, feeding, and weighing	Treat these as configuration items unless the quotation states that they are included

The same vessel size can therefore represent very different process capabilities. For microbial work, review whether the QF series’ higher published agitation range and DO-to-speed cascade fit the oxygen and mixing requirements. For cell culture, review whether the QC series’ lower-speed agitation, agitator options, four-gas control, and broader working-volume range within each vessel size fit the intended process.

Do not assume that every probe, agitator, analyzer, pump, or expansion unit shown in the product information is included in the standard configuration. The quotation should state the supplied hardware for the selected model.

WHY BENCHTOP BIOREACTORS MATTER FOR PROCESS DEVELOPMENT AND SCALE-UP

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Precision and Control: Allows fine-tuning of environmental parameters (pH, DO, temperature, agitation) to maximize yield and product quality in advanced lab bioreactors.

Scalability: Facilitates process optimization at a small scale, reducing risks and costs before scaling to industrial bioreactors.

Versatility: Supports diverse organisms (bacteria, yeast, mammalian cells, algae) and culture modes (batch, fed-batch, continuous), accommodating varied applications.

Compliance: Designed to meet CGMP and FDA standards (as seen in the BioCore QF), ensuring regulatory compliance for pharmaceutical and food applications.

Cost-Effectiveness: Enables cost-efficient R&D by minimizing resource use while providing robust data for process development.

Specific Example: BioCore QF Fermentation System

SCALE-UP RECORD CHECKLIST

A bench top fermenter used for process development should generate a complete record of the operating conditions rather than a collection of isolated maximum specifications. Record the actual working volume, impeller, rpm, airflow or gas flow, pH setpoint, DO setpoint, temperature, feeding strategy, cascade sequence, sampling schedule, and process result for every run.

A bench scale cheap bioreactor should not be selected or scaled by nominal vessel volume alone. When comparing the 3 L, 5 L, 7 L/7.5 L, and 15 L models, document which variables will remain constant and which variables will change.

Scale-Up Variable	Information to Record
Vessel	Series, model, nominal volume, actual working volume, and vessel geometry
Mixing	Agitator or impeller type, rpm, and mixing-control method
Gas delivery	Gas composition, gas-flow setting, airflow, and control hardware
pH control	Setpoint, probe, control agents, pump assignment, and cascade logic
DO control	Setpoint, probe, agitation cascade, gas cascade, and flow cascade
Temperature	Setpoint, starting temperature, control method, and cooling conditions
Feeding	Pump, feed material, timing, rate, and total feed volume
Culture	Organism or cell type, medium, inoculation level, and process mode
Process result	Biomass, viability, product result, batch time, and observed deviations
Data source	USB record, sampling record, operator record, and test date

kLa and OTRmax can support oxygen-transfer evaluation, but the figures are only meaningful when the test conditions are disclosed. A model-specific result should identify the vessel, working volume, impeller, rpm, gas flow, medium, temperature, measurement method, and test date.

The current public BIOCORE QF and QC technical tables do not list model-specific kLa or OTRmax values. Until verified test data are available, these terms should be presented as process-development criteria rather than as confirmed product-performance claims.

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PRECISION CIRCULATING WATER BATH

2026-11-04T03:37:00+02:00

A circulating bath heater is an essential lab instrument designed to maintain accurate and uniform temperatures (ambient to 100°C+) for samples in tubes, flasks, or beakers. Its built-in pump ensures consistent heat distribution, making it ideal for enzyme reactions, sample thawing, and microbiological assays. Constructed with corrosion-resistant materials, it's widely used in research, clinical, and industrial labs.

WHAT IS THE USE OF WATER BATH SHAKER?

A water bath shaker combines temperature control (water bath) and agitation (shaking) for:

Uniform Heating & Mixing -Ideal for enzymatic reactions (e.g., DNA digestion).

Cell Culture - Gentle suspension of temperature-sensitive cells.

Solubility Studies- Dissolving compounds at controlled temps (25°C-100°C).

Microbial Growth - Aerobic culturing with precise heat distribution.

WHAT IS THE DIFFERENCE BETWEEN A CIRCULATING WATER BATH AND A SHAKING WATER BATH?

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Digital circulating bath:

Maintains uniform temperature (no shaking).

Uses a pump to circulate water.

Ideal for precise heating (e.g., reagent warming, stability tests).

Shaking Water Bath:

Combines heating + agitation (50-300 rpm).

Used for mixing while heating (e.g., cell culture, solubility studies).

Choose circulating for stability, shaking for mixing+heating.

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WATERBATH INCUBATOR SHAKER

2026-11-04T03:36:00+02:00

ZHICHU in orbital water bath incubator shaker delivers gentle or vigorous shaking to ensure even sample mixing and uniform temperature distribution. Our water bath shaker, perfect for biochemical reactions, enzyme assays, microbial culture growth, and solubility studies, enhances experimental precision and reliability. Developed by Zhi Chu, this water bath incubator is designed for consistent performance in laboratory applications.

WHAT IS THE USE OF SHAKER IN ZHICHU WATER BATH INCUBATOR SHAKER

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The water bath incubator shaker provides gentle or vigorous shaking to mix samples evenly during incubation.

Equipped with precise temperature controls, the water bath incubator shaker enhances heat transfer and maintains uniform temperature throughout the sample.

For applications such as biochemical reactions, enzyme assays, microbial culture growth, and solubility studies, our orbital water bath shaker by Zhi Chu is the optimal choice.

If you want to know more kinds of reciprocal shaking water bath, orbital shaking water bath, thermostatic shaking water bath, please visit our website.

As one of general lab equipment manufacturers, we will do our best to meet all the needs of customers.

TRIPLE GAS INCUBATOR

2026-10-20T09:14:00+03:00

This triple gas incubator precisely regulates O₂ (1-21%), CO₂ (0-20%), and N₂ levels for hypoxic and anaerobic studies. Featuring temperature uniformity (±0.1°C) and humidity control (95% RH), the tri gas incubator is ideal for stem cell research, cancer studies, and IVF applications. The copper-enriched interior and dual HEPA filtration of the trigas incubator ensure contamination-free cultures, while touchscreen controls simplify the operation of this advanced triple gas incubator.

TYPES OF TRIPLE GAS INCUBATOR

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Thermostatic Air-jacket Triple Gas Incubator POU-90A/150A/260A (UV sterilization)

Thermostatic Air-jacket Triple Gas Incubator POG-90A/150A/260A (Dry heat 180℃ Sterilization)

Thermostatic Air-jacket Triple Gas Incubator POU-MINI25/40 (UV sterilization)

Thermostatic Water jacketed Triple Gas Incubator B141

Cooling Water jacketed Triple Gas Incubator B141R

TRIPLE GAS INCUBATOR: KEY FEATURES AND APPLICATIONS

Triple Gas Incubator: Key Features and Applications

A multi-gas incubator is an advanced cell culture incubator that precisely controls CO₂, O₂, and N₂ levels, allowing researchers to simulate physiological conditions and optimize cell growth. This versatile triple gas incubator is widely used in stem cell research, tissue engineering, and low-oxygen experiments.

For laboratories selecting a trigas incubator, ZHICHU offers air-jacket models with UV or 180°C dry heat sterilization, alongside water-jacket models and a cooling water-jacket option. Compare these configurations according to your culture temperature requirements and routine cleaning procedures.

Key Features and Operation Tips for the Triple Gas Incubator

Temperature Control

Maintains a stable and uniform temperature essential for consistent cell growth.

CO₂ Regulation

Ensures proper pH in the culture medium, supporting healthy cell proliferation, a critical function optimized in the triple gas incubator.

O₂ Regulation

Allows precise control of oxygen levels to simulate low-oxygen or physiological conditions.

Humidity Control

Prevents media evaporation and maintains optimal cell culture conditions.

Safe Operation Practices

Proper sample placement, avoiding overcrowding, and routine calibration of gas sensors ensure accurate and reproducible results— best practices tailored for the triple gas incubator in scientific research.

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ULTRASONIC CELL DISRUPTOR MANUFACTURER

2026-10-20T09:14:00+03:00

Ultrasonic cell disruptor uses high-frequency sound waves (20-40 kHz) to lyse cells, disrupt tissues, and homogenize samples. Ideal for DNA/RNA extraction, protein isolation, and nanoparticle dispersion, ZHICHU ultrasonic cell disruptor—a high-performance ultrasonic disruptor from reputable ultrasonic cell disruptor manufacturers—delivers fast, consistent results with adjustable power and pulse settings. Its titanium probe ensures durability, while cooling options prevent sample overheating. Essential for biotechnology, pharmaceutical, and research labs, ultrasonic cell disruptors from top manufacturers have become an indispensable tool for efficient sample processing.

TYPES OF ULTRASONIC CELL DISRUPTOR

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650W Ultrasonic Cell Disruptor

 Ultrasonic Cell Disruptor ZCPS-600（0.1~600ml dispersing capacity）

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WHAT DOES AN ULTRASONIC CELL DISRUPTOR DO?

What Does an Ultrasonic Cell Disruptor Do?

An ultrasonic sonifier cell disruptor (also called ultrasonic homogenizer or sonicator) is a powerful laboratory instrument that utilizes high-frequency ultrasonic waves (typically 20-50 kHz) to perform multiple essential functions. This technology is expertly implemented in products by Zhi Chu.

Cell Disruption:

Efficiently lyses various biological samples including bacteria, yeast, plant/animal tissues

Ideal for protein extraction, DNA/RNA isolation, and organelle preparation

More effective than mechanical methods for tough cell walls, showcasing the superior performance of Zhi Chu's ultrasonic cell disrupter.

Sample Homogenization:

Creates uniform emulsions and suspensions

Reduces particle size in nanoparticle preparations

Mixes immiscible liquids effectively

Chemical Processing:

Accelerates chemical reactions (sonochemistry)

Enhances enzymatic digestion processes

Improves extraction efficiency

WHAT ARE THE THREE METHODS OF DISRUPTING CELLS?

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Mechanical Disruption

Bead Mill (Bead Beating): Glass/small beads grind cells via vigorous shaking.

Homogenization: Forces cells through narrow channels under high pressure (e.g., French Press).

Ultrasonication: Uses high-frequency sound waves to lyse cells (cavitation effect), a method efficiently utilized by Zhi Chu's ultrasonic cell disrupter.

Chemical/Lysis Buffers

Detergents (e.g., SDS, Triton X-100) dissolve membranes.

Enzymes (e.g., lysozyme for bacterial walls, cellulase for plants).

Osmotic Shock: Sudden exposure to hypotonic solutions bursts cells.

Physical Methods

Freeze-Thaw Cycling: Repeated freezing/rupturing of membranes.

Thermal Lysis: Heat denaturation (for heat-resistant products).

Electroporation: Electric pulse create pores in membranes.

What Are the Three Methods of Disrupting Cells?

HOW TO SELECT THE RIGHT PROBE, POWER, PULSE, AND COOLING SETUP

Choosing an ultrasonic disruptor should begin with the working sample volume, vessel geometry, sample type, required processing endpoint, and maximum acceptable temperature rise—not with nominal wattage alone. Probe diameter determines the practical processing range, while the final power and pulse program should be validated against lysis efficiency, product integrity, and sample temperature.

The published ZCPS range includes four configurations: ZCPS-600 with 5–650 W output and a 0.1–600 mL sample capacity; ZCPS-900 with 10–1000 W output and a 0.1–900 mL capacity; ZCPS-1200 with 12–1200 W output and a 1–1200 mL capacity; and ZCPS-1500 with 18–1800 W output and a 1–1500 mL capacity.

For work up to 600 mL, review the 650W Ultrasonic Cell Disruptor and its ZCPS-600 configuration. Use the table below for initial model and probe selection, then validate the final settings with the actual sample and vessel.

Working Sample Volume	Probe Diameter	Published Power Ratio and Compatible Models	Pulse Strategy	Cooling Strategy	Typical Applications
0.2–5 mL	Ø2 mm	1–35%; ZCPS-600, ZCPS-900, or ZCPS-1200	Use very short intermittent runs and inspect the sample after each cycle	Pre-chill the tube and use an ice-water bath; monitor temperature closely because small volumes heat quickly	Micro-sample method development, DNA/RNA shearing, small-volume cell lysis, and analytical sample preparation
3–10 mL	Ø3 mm	1–45%; ZCPS-600, ZCPS-900, ZCPS-1200, or ZCPS-1500	Begin with short pulse intervals and stop once the required endpoint is reached	Use a pre-chilled vessel or ice bath and avoid unnecessary total processing time	Bacterial and yeast lysis, protein extraction, nucleic-acid preparation, and small tissue samples
10–100 mL	Ø6 mm	1–70%; compatible with all four ZCPS models	Use intermittent operation for heat-sensitive materials and compare disruption efficiency after each stage	Use an ice-water bath or jacketed vessel together with the temperature alarm	Routine microbial cell lysis, protein release, DNA/RNA extraction, homogenization, and sample dispersion
20–200 mL	Ø8 mm	1–85%; compatible with all four ZCPS models	Process in controlled pulse stages with periodic inspection of the sample	Use external cooling and define a maximum allowable sample temperature before starting	Tissue homogenization, nanoparticle dispersion, emulsification, extraction, and mixed suspensions
30–300 mL	Ø10 mm	1–90%; compatible with all four ZCPS models	Increase total energy gradually instead of beginning at the upper power limit	Use a chilled or jacketed vessel and monitor temperature throughout the run	Plant or animal tissue homogenization, extraction, emulsification, and larger microbial samples
50–600 mL	Ø12 mm	10–90%; compatible with all four ZCPS models	Use pulsed or staged processing and verify both temperature and processing uniformity	Active external cooling is recommended for temperature-sensitive proteins, enzymes, and nucleic acids	Larger-volume microbial lysis, protein extraction, suspension homogenization, and particle dispersion
200–750 mL	Ø15 mm	10–90%; ZCPS-1200 or ZCPS-1500	Divide the process into controlled intervals and inspect the sample between stages	Use a jacketed vessel or external circulation where temperature control is critical	Medium- to large-batch homogenization, extraction, emulsification, and process development
100–1000 mL	Ø20 mm	10–90%; ZCPS-1200 or ZCPS-1500	Use staged processing and confirm that energy is distributed throughout the vessel	External circulation or another validated cooling arrangement is recommended	Larger-volume dispersion, nanomaterial processing, emulsification, liquid degassing, and homogenization
200–1200 mL	Ø22 mm	20–95%; ZCPS-1200 or ZCPS-1500	Establish a sample-temperature ceiling and divide the total treatment into repeatable stages	Use continuous external temperature control for heat-sensitive products	Large-batch cell disruption, process-scale homogenization, extraction, and suspension processing
300–1500 mL	Ø25 mm	30–95%; ZCPS-1500 only	Use staged processing and validate each step before increasing the total energy input	Continuous external cooling and real-time temperature monitoring are strongly recommended	Maximum-volume batch dispersion, emulsification, homogenization, and pilot-scale method development

The published power ratio identifies the operating range associated with each horn; it is not a universal recommended starting value. Cell concentration, viscosity, vessel shape, probe immersion depth, and the sensitivity of the target material can all change the required energy input.

In procurement documents, the term sonicator cell disruptor may be used as an alternate name for probe-based ultrasonic equipment. The label alone does not determine suitability: working volume, probe diameter, vessel geometry, temperature limit, and the required processing endpoint remain the primary selection criteria.

For a heat-sensitive cell disrupter application, establish a maximum sample temperature before method development. Use short intermittent runs, pre-chilled samples, an ice-water bath or jacketed vessel, and the instrument’s temperature alarm to control heat exposure. Record the actual power, pulse pattern, total processing time, starting and final temperature, sample volume, and result for every validated run.

When evaluating an ultrasonic cell disrupter for repeatable laboratory work, confirm that the supplied horn matches the intended sample volume. Also verify that the system can store operating methods and export run data, especially when the protocol will be transferred between operators or repeated for quality-controlled applications.

When comparing ultrasonic cell disruptor manufacturers, request a model-to-horn compatibility table, documented over-temperature protection, inspection or calibration information, method-storage and data-export functions, warranty coverage, and application support rather than comparing maximum wattage alone.

Do not choose a cell disruptor from a single specification. Send ZHICHU the sample type, working volume, vessel dimensions, target endpoint, current protocol, and maximum acceptable temperature to receive a suitable model and probe recommendation.

If you want to know more kinds of general laboratory instruments, please visit our website.

STACKABLE INCUBATOR SHAKER

2026-10-20T09:13:00+03:00

Stackable incubator shaker combines precise temperature control (ambient to 80°C+) with programmable agitation (50-500 rpm) in a compact, stackable design, optimizing lab space. Ideal for high-throughput cell culture, protein expression, and fermentation, it features humidity control and CO₂ compatibility (optional). Its uniform heating and shaking ensures consistent growth conditions for biopharmaceutical, microbiology, and research applications.

TYPES OF STACKABLE INCUBATOR SHAKER

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High Speed Stackable Incubator Shaker Triple-drive ZQZY-3CS8H (each shaker 306L)

High Speed Stackable Incubator Shaker Single-drive ZQZY-88A B CH (each shaker 155L)

High Speed Stackable Incubator Shaker Dual-drive ZSZY-88A B CH (each shaker 155L)

Stackable Incubator Shaker ZQZY-78A B C (each shaker 128L)

Stackable Incubator Shaker ZQZY-88A B C (each shaker 155L)

Stackable Incubator Shaker ZQZY-98A B C (each shaker 176L)

Stackable Incubator Shaker ZQZY-108A B C (each shaker 197L)

Stackable Incubator Shaker ZQZY-A B CS9 (each shaker 339L)

Stackable Incubator Shaker ZQZY-A B CNR (each shaker 193L)

Stackable Incubator Shaker ZQZY-A B CS8 (each shaker 306L)

Stackable Incubator Shaker ZQZY-A B CSR8

Stackable Incubator Shaker ZQZY-R1 R2 R3 (each shaker 282L)

Stackable Incubator Shaker ZQZY-A B CR8 (each shaker 282L)

Stackable Incubator Shaker ZDZY-A BS8 (each shaker 372L)

Stackable Incubator Shaker ZDZY-A BR8 (each shaker 372L)

Stackable Incubator Shaker ZQZY-CF8

Reciprocating Stackable Incubator Shaker ZQZY-A B CF8W

Automation Stackable Incubator Shaker ZQZY-ZD8A B C

USES FOR A STACKABLE INCUBATOR SHAKER

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Microbial Culture Growth

Provides precise shaking and temperature control for growing bacteria, yeast, and fungi in research or industrial applications.

Protein Expression

Used in recombinant protein production by growing genetically engineered microorganisms under controlled conditions.

Fermentation Studies

Supports aerobic fermentation for biofuel, enzyme, or organic acid production at lab or pilot scale.

Cell Suspension Culture

Maintains ideal mixing for mammalian or insect suspension cells in biotechnology and pharmaceutical labs.

Biopharmaceutical Research

Facilitates drug screening, antibody production, and other bioprocess development requiring consistent agitation and incubation.

Space-Efficient Scaling

Multiple units can be stacked to increase throughput without expanding lab footprint.

We can provide kinds of stackable incubators for sale. If you want to buy an incubator shaker stackable, please contact us.

As one of laboratory equipment manufacturers in china, we will do our best to meet all the needs of customers.

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2026-10-20T09:12:16+03:00

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LOW TEMPERATURE CONSTANT TEMPERATURE CIRCULATING BATH

2026-10-20T09:12:00+03:00

This low temperature constant temperature recirculating water bath delivers stable refrigeration (-40°C to 100°C) with ±0.01°C precision for critical applications. Engineered for pharmaceutical testing, material research, and semiconductor processing, it features high-viscosity fluid circulation, corrosion-resistant components, and intelligent PID control. The compact design with large viewing window ensures optimal performance for laboratory and industrial use.

TYPES OF LOW TEMPERATURE CONSTANT TEMPERATURE CIRCULATING BATH

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Low Temperature Constant Temperature Circulating Bath ZQDC-2008（8L)

Low Temperature Constant Temperature Circulating Bath ZQDC-2012 (12L)

Low Temperature Constant Temperature Circulating Bath ZQDC-2025 (25L)

Now price of recirculating water bath chiller is reasonable, anything you need, please contact us.

As one of general lab equipment manufacturers, we will do our best to meet all the needs of customers.