Product Description
The Digital 4 Hole Water Bath HH-S4 China is a thermostatically controlled laboratory heating instrument designed to maintain water at a selected temperature so that multiple laboratory samples can be heated or maintained under comparatively stable thermal conditions.
The HH-S4 incorporates four working openings, allowing several sample vessels to be positioned in the heated water bath at the same time.
Current Bangladesh specifications for this exact HH-S4 configuration identify a digital temperature-control system, stainless-steel bath construction, 5°C to 100°C control range, ±1.5°C temperature fluctuation, 800W heating power, and 220V 50Hz electrical supply.
The water inside the chamber acts as the heat-transfer medium. Instead of placing a laboratory sample directly in contact with an electric heating element, a suitable container can be surrounded by heated water.
This method can provide relatively gentle and controlled heating for procedures where direct flame or direct-contact heating is undesirable.
The HH-S4 is commonly marketed for laboratory applications involving:
- Controlled sample warming
- Maintaining samples at a selected temperature
- Chemical solution work
- Reagent warming
- Sample incubation
- Laboratory reaction procedures
- Biological sample preparation
- Constant-temperature experiments
- Routine chemistry laboratory procedures
- Educational laboratory work
A Bangladesh supplier specifically describes the HH-S4 digital thermostatic water bath for processes involving concentrated solutions, chemical reagents, drugs and biological materials.
Its four-hole arrangement provides a practical advantage when several vessels need to be heated simultaneously, making it useful for routine laboratories, universities, research environments and quality-control facilities.
Key Features
- Digital thermostatic laboratory water bath.
- Model HH-S4.
- Four-hole configuration.
- Digital temperature display.
- Adjustable temperature control.
- Commonly listed temperature range of 5°C to 100°C.
- Approximately ±1.5°C temperature fluctuation on the Bangladesh configuration.
- 800W heating power on commonly supplied configuration.
- AC 220V, 50Hz operation.
- Stainless-steel internal water chamber.
- Corrosion-resistant working chamber.
- Multiple sample positions.
- Four separate working openings.
- Suitable for simultaneous heating of multiple compatible vessels.
- Concentric removable rings are commonly used around water-bath openings to accommodate different vessel sizes.
- Designed for controlled indirect heating through water.
- Suitable for maintaining constant-temperature conditions.
- Digital display simplifies temperature monitoring.
- Compact laboratory benchtop format.
- Suitable for routine laboratory use.
- Useful in chemistry laboratories.
- Suitable for research applications.
- Useful in educational laboratories.
- Suitable for selected biological and medical laboratory procedures.
- Made in China.
Current product descriptions specifically identify the HH-S4 as a digital thermostatic four-hole water bath with stainless-steel construction, while common product images/listings show adjustable ring-style openings for accommodating laboratory containers.
Technical Specifications
| Specification | Details |
| Product Name | Digital 4 Hole Water Bath |
| Model | HH-S4 |
| Product Type | Digital Thermostatic Water Bath |
| Number of Holes | 4 |
| Temperature Control Range | 5°C–100°C |
| Temperature Fluctuation | ±1.5°C |
| Heating Power | 800W |
| Temperature Display | Digital |
| Inner Chamber Material | Stainless Steel |
| Power Supply | AC 220V |
| Frequency | 50Hz |
| Bath Size | Approx. 300 × 300 × 120 mm |
| Alternative Listed Bath Size | Approx. 325 × 300 × 120 mm |
| Overall Dimensions | Approx. 520 × 460 × 250 mm |
| Weight | Approx. 5.5kg |
| Installation | Benchtop |
| Heating Medium | Water |
| Country of Origin | China |
| Pack Size | 1 Unit |
The 800W configuration, 220V/50Hz electrical requirement, ±1.5°C fluctuation and overall 520 × 460 × 250mm dimensions are consistently listed by multiple Bangladesh sellers for the exact HH-S4 product.
Important Specification Note
One Bangladesh listing gives the bath size as approximately 325 × 300 × 120mm, while another gives 300 × 300 × 120mm.
This small discrepancy reinforces the need to check the actual supplied unit when chamber dimensions are important for institutional procurement.
Product Overview
Four-Hole Design
The defining feature of the HH-S4 is its four-hole working configuration.
Instead of providing only one large bath opening, the upper working surface has four positions designed to accommodate multiple laboratory vessels.
This can allow several compatible containers to be heated simultaneously.
The four-hole arrangement is particularly useful when:
- Multiple samples require the same temperature.
- Several reagents need to be warmed together.
- Parallel laboratory procedures are being performed.
- A teaching laboratory needs several working positions.
- Repetitive testing is being carried out.
The HH-S4 is consistently identified by suppliers as a four-hole or two-row four-opening thermostatic water bath.
Digital Temperature Control
The HH-S4 uses electronic thermostatic temperature control with a digital display.
The digital display allows the operator to view the selected or measured temperature more conveniently than a traditional purely mechanical water bath.
Digital control is particularly helpful when routine laboratory procedures need to be repeated at a specified temperature.
Supplier descriptions specifically identify the HH-S4 as a digital thermostatic water bath.
Temperature Range
For the Bangladesh configuration matching this exact product, the commonly stated temperature-control range is:
5°C to 100°C
However, users should interpret the lower limit carefully.
Because this is a heated water bath rather than a refrigerated circulating bath, it cannot normally cool water below the surrounding room temperature without an external cooling source.
Other HH-S4 manufacturer specifications therefore describe the operating range more realistically as approximately:
Room Temperature +5°C to 100°C.
For purchasing or method validation, the actual manufacturer’s manual and product label should take priority.
Temperature Fluctuation
The Bangladesh HH-S4 configuration is commonly listed with a temperature fluctuation of approximately:
±1.5°C
Other manufacturer variants report tighter values, demonstrating that different HH-S4 versions are not necessarily technically identical.
For laboratory procedures requiring traceable temperature accuracy, the actual unit should be independently checked or calibrated according to the laboratory’s quality requirements.
800W Heating Power
The commonly supplied Bangladesh HH-S4 configuration uses approximately:
800W Heating Power
The heating element transfers thermal energy to the water inside the stainless-steel bath, allowing the water temperature to increase toward the selected set point.
Heating time can depend on:
- Starting water temperature
- Amount of water
- Selected temperature
- Ambient room temperature
- Sample load
- Container quantity
- Heat loss
- Supply voltage
The bath should always contain an appropriate amount of water before the heater is operated.
Stainless-Steel Water Chamber
The HH-S4 is commonly supplied with an internal stainless-steel water chamber.
Stainless steel is useful for laboratory water baths because it provides a smooth, relatively corrosion-resistant surface and can be cleaned more easily than untreated steel.
Both China-manufacturer information and Bangladesh supplier descriptions identify stainless steel as a key material used in HH-S4 water baths.
Regular cleaning and appropriate water quality are still important because mineral deposits, contamination and residue can accumulate inside any water bath.
Adjustable Ring Openings
Four-hole laboratory water baths commonly incorporate removable concentric rings around each opening.
The rings allow the size of the opening to be adjusted for different compatible vessels.
This can help position a container so that it receives effective heat transfer from the surrounding water without unnecessarily exposing a large opening in the bath.
Current HH-S4 product descriptions specifically refer to four sample openings and adjustable ring-style vessel accommodation.
The exact number and sizes of supplied rings should be confirmed with the actual unit.
Constant-Temperature Heating
Once the water bath approaches the selected setting, the thermostat regulates heater operation to maintain the required temperature within the performance limits of the supplied model.
This makes a thermostatic water bath useful when a procedure requires samples to remain warm for a defined period rather than simply being heated rapidly.
Actual stability depends on:
- Water level
- Sample load
- Ambient conditions
- Container placement
- Lid/opening configuration
- Frequency of sample removal
- Controller performance
Main Applications
Chemistry Laboratories
The HH-S4 may be used for routine chemistry laboratory procedures requiring controlled indirect heating.
Typical applications can include:
- Warming chemical solutions
- Dissolving suitable materials
- Heating reagents
- Maintaining reaction mixtures at a selected temperature
- Sample preparation
- Constant-temperature experiments
Supplier documentation identifies chemical reagent and solution work among common thermostatic water-bath applications.
Biological and Medical Laboratory Work
A thermostatic water bath may be used in appropriate biological or medical laboratory procedures requiring samples or reagents to remain at a defined elevated temperature.
Examples may include:
- Reagent warming
- Sample conditioning
- Controlled incubation steps
- Biological material preparation
The exact temperature, time and handling requirements must follow the specific laboratory method or SOP.
Bangladesh supplier documentation for HH-S4 includes drugs and biological materials among its stated applications.
Research Laboratories
Research laboratories may use the HH-S4 when several samples need controlled heating simultaneously.
The four-hole configuration provides multiple working positions while the digital controller allows adjustment of the bath temperature.
Pharmaceutical Laboratories
Suitable water baths can support laboratory-scale pharmaceutical work involving controlled warming of:
- Reagents
- Solutions
- Samples
- Test preparations
Any pharmaceutical QC or validated process should confirm the water bath’s required temperature performance and calibration status before use.
Educational Laboratories
The HH-S4 can be useful in:
- Schools
- Colleges
- Universities
- Technical training centers
- Science laboratories
Its four-hole design can be particularly convenient for demonstrations or practical sessions involving multiple samples.
Industrial Quality-Control Laboratories
The unit may be used for appropriate routine QC procedures requiring water-mediated heating or constant-temperature sample conditioning.
The selected test method should always be compatible with the actual temperature range and performance of the supplied water bath.
Key Benefits
Four Sample Positions
Four openings allow multiple compatible laboratory containers to be heated at the same time.
Digital Temperature Monitoring
The digital interface makes it convenient to set and monitor operating temperature.
Controlled Indirect Heating
Samples are heated through a surrounding water medium rather than direct flame.
Stainless-Steel Chamber
The stainless-steel bath provides a durable working chamber suitable for routine laboratory cleaning.
Up to 100°C Listed Temperature Range
The commonly listed HH-S4 configuration provides heating up to approximately 100°C.
800W Heating System
An 800W heater provides the commonly specified heating capacity for the Bangladesh version.
Multiple Laboratory Applications
The water bath can support suitable chemistry, research, educational, biological and quality-control procedures.
Compact Benchtop Design
The machine can provide four working positions without requiring a large floor-mounted laboratory system.
Simple Routine Operation
Digital thermostatic controls make the equipment practical for routine temperature-controlled laboratory work.
Who Should Buy This Product?
The Digital 4 Hole Water Bath HH-S4 China may be suitable for:
- Chemistry laboratories
- Research laboratories
- Medical laboratories
- Diagnostic laboratory support sections
- Pharmaceutical laboratories
- Quality-control laboratories
- Food-testing laboratories
- Biological laboratories
- Educational laboratories
- Universities
- Colleges
- Medical colleges
- Science departments
- Research institutes
- Industrial laboratories
- Government laboratories
- Private laboratories
- Laboratory technicians
- Researchers
- Laboratory equipment suppliers
- Institutional procurement departments
Buyers should confirm the actual model specifications when the water bath will be used for a standardized, validated or regulated laboratory procedure.
How to Use the HH-S4 Digital Water Bath
Always follow the operating instructions supplied with the actual machine.
A general operating procedure may include:
- Place the HH-S4 on a stable, dry and level laboratory bench.
- Confirm that the equipment’s voltage matches the available electrical supply.
- Ensure that the drain, if fitted, is properly closed.
- Add clean water to the chamber before switching on the heater.
- Maintain an appropriate water level.
- Position compatible laboratory vessels in the required openings.
- Use the supplied concentric rings where appropriate to adjust each opening.
- Connect the unit to the correct electrical supply.
- Switch on the water bath.
- Set the required temperature using the controller.
- Allow the water temperature to stabilize.
- Load or maintain samples according to the relevant laboratory procedure.
- Monitor the water level during extended heating.
- Never allow the water bath to operate dry.
- After the procedure, remove samples safely.
- Switch off the heater and power.
- Disconnect the equipment where appropriate.
- Allow the water and equipment to cool before draining or cleaning.
Water Level Considerations
Maintaining the correct water level is important for safe and effective operation.
Too little water may:
- Expose the heater excessively.
- Reduce temperature uniformity.
- Increase the risk of overheating.
- Damage the equipment.
Too much water may:
- Overflow when vessels are inserted.
- Enter openings or electrical areas.
- Create a spill hazard.
Users should follow the manufacturer’s recommended minimum and maximum fill levels if these are marked on the supplied unit.
Safety Considerations
- Read the operating instructions before first use.
- Verify the electrical rating before connecting power.
- Use a properly grounded electrical outlet.
- Always add water before activating the heater.
- Never operate the water bath dry.
- Keep electrical components away from spilled water.
- Do not immerse the electrical housing.
- Keep the working bench dry.
- Be careful when handling hot water.
- Use suitable heat-resistant laboratory containers.
- Wear appropriate laboratory PPE.
- Use thermal gloves or suitable handling tools where required.
- Do not exceed the manufacturer’s maximum temperature.
- Do not overfill the chamber.
- Monitor water level during long procedures.
- Do not touch hot internal surfaces immediately after use.
- Allow the unit to cool before draining.
- Do not use damaged power cables.
- Disconnect power before maintenance.
- Do not modify the thermostat or electrical system.
- Follow chemical-specific safety requirements.
- Do not heat incompatible, volatile or flammable materials unless the complete procedure and equipment are explicitly suitable for doing so.
- Follow institutional laboratory SOPs.
Cleaning and Maintenance
Routine cleaning helps keep the HH-S4 water bath suitable for laboratory use.
After Routine Use
- Switch off the heater.
- Disconnect electrical power where appropriate.
- Allow the water to cool.
- Drain used water.
- Wipe the chamber.
- Remove any residue.
- Dry exposed surfaces where required.
Water Chamber Care
The stainless-steel bath should be kept free from:
- Mineral scale
- Chemical contamination
- Biological growth
- Rust contamination from external objects
- Sample spills
Using appropriate laboratory-grade or suitably treated water may help reduce mineral deposits, depending on the laboratory procedure.
Periodic Inspection
Check:
- Electrical cable
- Plug
- Digital display
- Temperature controller
- Stainless-steel chamber
- Concentric rings
- Heating performance
- Temperature response
- General housing condition
Discontinue operation if there is electrical damage, leakage or abnormal heating.
Calibration and Temperature Verification
For routine non-critical procedures, laboratories may monitor the displayed temperature according to their own operating practices.
For regulated, accredited or quality-controlled testing, temperature performance may need to be verified using an appropriate calibrated reference thermometer.
Users should not assume that the digital display alone constitutes a traceable calibration.
The Bangladesh-listed ±1.5°C fluctuation is a product specification rather than a calibration certificate.
Calibration requirements should therefore be determined according to the applicable laboratory quality system or test standard.
Limitations and Important Considerations
- HH-S4 is a generic model produced or supplied in multiple configurations.
- Exact manufacturer has not been specified by the user.
- Heating power differs between some HH-S4 manufacturers.
- The Bangladesh configuration is commonly listed as 800W.
- Other Chinese HH-S4 versions may be 1000W or 1200W.
- Bath dimensions vary slightly between suppliers.
- Bangladesh listings commonly report approximately 300 × 300 × 120mm or 325 × 300 × 120mm.
- Some listings state 5°C–100°C, although a non-refrigerated water bath cannot normally cool below ambient temperature by itself.
- Other HH-S4 manufacturer documentation specifies approximately RT+5°C–100°C.
- Exact temperature accuracy should be verified where method-critical.
- Hole diameter and supplied concentric rings should be checked from the actual unit.
- Calibration certification should not be assumed.
- Included accessories should be confirmed before quotation.
- Water level must be maintained during operation.
- The unit should never be operated dry.
Available Configuration
Product: Digital 4 Hole Water Bath
Model: HH-S4
Type: Digital Thermostatic Water Bath
Number of Holes: 4
Temperature Range: Commonly listed 5°C–100°C
Temperature Fluctuation: ±1.5°C
Heating Power: 800W on Bangladesh configuration
Voltage: 220V
Frequency: 50Hz
Bath Size: Approximately 300 × 300 × 120mm
Overall Size: Approximately 520 × 460 × 250mm
Weight: Approximately 5.5kg
Inner Chamber: Stainless Steel
Pack Size: 1 Unit
Country of Origin: China
Digital 4 Hole Water Bath HH-S4 Price in Bangladesh
The latest Digital 4 Hole Water Bath HH-S4 price in Bangladesh should be confirmed directly from Inaya Scientific.
Current Bangladesh online listings in August 2026 show variation in market pricing.
For reference:
- Bright Scientific currently lists an HH-S4 four-hole water bath at approximately ৳7,000.
- Daraz Bangladesh shows an exact HH-S4 four-hole digital water bath listing at approximately ৳8,400 in one current result.
- Labtex Bangladesh currently lists the exact Digital 4 Hole Water Bath HH-S4 China at approximately ৳9,500.
These are third-party market references and should not be treated as Inaya Scientific’s selling price.
Price differences may depend on:
- Manufacturer
- Heating power
- Product batch
- Included accessories
- Warranty
- Calibration
- Import cost
- Exchange rate
- Supplier
- Stock availability
- Order quantity
- Delivery location
For an accurate quotation, request:
Digital 4 Hole Water Bath – Model HH-S4 – China – 1 Unit
Availability and Delivery in Bangladesh
The Digital 4 Hole Water Bath HH-S4 China may be supplied by Inaya Scientific subject to current stock availability.
Customers requesting a quotation should provide:
- Required quantity
- Individual or organization name
- Delivery location
- Intended laboratory application
- Required temperature specification
- Calibration requirement, if any
- Warranty requirement
- VAT/TAX documentation requirement, if applicable
- Required delivery date
Institutional buyers should confirm:
- Model HH-S4
- Manufacturer / brand
- Number of holes
- Temperature range
- Temperature fluctuation or accuracy
- Heating power
- Voltage
- Chamber dimensions
- Overall dimensions
- Stainless-steel construction
- Included rings/lids
- Warranty
- Calibration requirement
- Country of origin
- Current price
- Current stock
before finalizing the purchase.
Why Buy From Inaya Scientific?
- Current Bangladesh price confirmation.
- Laboratory water bath sourcing support.
- Product specification verification before ordering.
- Institutional quotation support.
- University and research procurement assistance.
- Laboratory equipment sourcing.
- Scientific equipment supply support.
- Bulk-order assistance.
- Medical and diagnostic laboratory equipment sourcing.
- Chemistry laboratory equipment support.
- Educational laboratory procurement assistance.
- Technical specification enquiry support.
- Related laboratory instruments and consumables sourcing.
- Nationwide delivery support subject to stock and courier coverage.
Frequently Asked Questions
1. What is the HH-S4 Digital 4 Hole Water Bath?
The HH-S4 is a digital thermostatic laboratory water bath with four working openings. It uses heated water to provide controlled indirect heating for suitable laboratory samples and vessels.
2. How many holes does the HH-S4 have?
The HH-S4 configuration has four working holes. It is also described by manufacturers as a two-row four-opening water bath.
3. What is the temperature range of the HH-S4?
Bangladesh listings commonly specify 5°C to 100°C. Some manufacturer documentation instead states approximately room temperature +5°C to 100°C, which is more representative of a non-refrigerated heated water bath.
4. What is the heating power?
The commonly listed Bangladesh configuration uses approximately 800W heating power.
5. What is the temperature fluctuation?
Current Bangladesh specifications commonly list approximately ±1.5°C for the HH-S4 configuration.
6. Does the HH-S4 have a digital display?
Yes. The HH-S4 is marketed as a digital thermostatic water bath with digital temperature display/control.
7. Is the chamber made of stainless steel?
Yes. Supplier and manufacturer descriptions identify stainless steel as the internal bath material.
8. What voltage does the HH-S4 use?
The commonly supplied Bangladesh version is specified for AC 220V, 50Hz.
9. What is the bath size?
Bangladesh listings provide slightly different dimensions. Common values are approximately 300 × 300 × 120mm and 325 × 300 × 120mm. Check the supplied unit if exact dimensions are important.
10. What are the overall dimensions?
The commonly listed overall dimensions are approximately 520 × 460 × 250mm.
11. What is the weight of the HH-S4?
The commonly listed weight is approximately 5.5kg.
12. Can multiple samples be heated at the same time?
Yes. The four-hole design allows multiple compatible vessels to be positioned in the bath simultaneously.
13. Can the water bath be used in a chemistry laboratory?
Yes. Supplier documentation specifically identifies chemical solutions and reagents among common laboratory applications for thermostatic water baths.
14. Can it be used for biological laboratory work?
It may be used for suitable biological sample or reagent procedures where controlled water-bath heating is required. Supplier documentation also mentions biological materials among typical applications.
15. Can the HH-S4 cool samples below room temperature?
Not by itself. The standard HH-S4 is a heated thermostatic water bath and does not include an active refrigeration system. Manufacturer specifications for some versions therefore describe the lower operating limit as approximately ambient temperature +5°C.
16. Can the water bath be operated without water?
No. A laboratory water bath should not be operated dry. The water acts as the intended heat-transfer medium, and operating without sufficient water can damage the equipment or create a safety risk.
17. Are all HH-S4 water baths technically identical?
No. HH-S4 units from different Chinese manufacturers may differ in heating power, chamber dimensions and temperature specifications. Current listings include 800W, 1000W and 1200W variants.
18. Is the HH-S4 made in China?
Yes. The requested configuration and multiple Bangladesh listings identify the HH-S4 as Made in China.
19. What is the HH-S4 Water Bath price in Bangladesh?
Current Bangladesh market listings show approximately ৳7,000 to ৳9,500 across laboratory suppliers for HH-S4 configurations. Inaya Scientific’s current selling price should be confirmed directly.
20. Where can I buy Digital 4 Hole Water Bath HH-S4 in Bangladesh?
Contact Inaya Scientific to confirm the latest HH-S4 stock, technical specification, price, warranty and nationwide delivery options.
Order From Inaya Scientific
Order the Digital 4 Hole Water Bath HH-S4 China from Inaya Scientific for suitable laboratory heating, sample warming, reagent preparation, research and constant-temperature applications.
Seller: Inaya Scientific
Product: Digital 4 Hole Water Bath
Model: HH-S4
Type: Digital Thermostatic Water Bath
Number of Holes: 4
Heating Power: Commonly 800W
Power Supply: 220V, 50Hz
Pack Size: 1 Unit
Country of Origin: China
Mobile: +880 1778-492798
WhatsApp: 01620247815
Email: inayascientific@gmail.com
Website: www.inayascientific.com
Delivery: Nationwide delivery across Bangladesh, subject to current stock and courier conditions.
When ordering, specify:
Digital 4 Hole Water Bath – Model HH-S4 – 4 Hole – China – 1 Unit
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