OHAUS Guardian 5000 Hotplates, Stirrers & Hotplate Stirrers

The OHAUS Guardian™ 5000 Series is a family of advanced digital hotplates, magnetic stirrers, and hotplate stirrers designed for laboratories that need reliable heating, mixing, temperature control, safety features, and data connectivity.

Choose from five Guardian 5000 models with round 5.3 in, square 7 x 7 in, or large 10 x 10 in top plates. Depending on the model, the series offers temperatures up to 550°C, stirring speeds from 50 to 1,800 rpm, and stirring capacities up to 22 L.

Guardian 5000 models are well suited to Canadian research laboratories, universities and colleges, food and beverage QA/QC labs, environmental laboratories, industrial quality control, formulation, sample preparation, media preparation, reagent dissolution, and general laboratory heating and mixing.

Guardian 5000 Model Comparison

Which Guardian 5000 Model Should I Choose?

Your Requirement	Model to Consider
General-purpose laboratory heating and stirring	e-G52HS07C
Need the highest maximum plate temperature	e-G52HS07C or e-G52HP07C – up to 550°C
Large vessels or up to 22 L stirring capacity	e-G52HS10C
Small footprint or round vessels	e-G52HSRDA
Heating without magnetic stirring	e-G52HP07C
Magnetic stirring without heating	e-G52ST07C
Direct sample-temperature control with an included probe	K1 version of the applicable heating model

OHAUS Guardian 5000 e-G52HS07C

The e-G52HS07C is the most versatile general-purpose model in the Guardian 5000 family. Its 7 x 7 in ceramic top plate reaches temperatures up to 550°C while the magnetic stirrer handles up to 20 L of water at speeds from 50 to 1,800 rpm.

This configuration is a strong choice for laboratories performing routine reagent preparation, buffer preparation, sample heating, media preparation, dissolution, water or oil bath work, and other workflows where both heating and stirring are required.

e-G52HS07C Key Specifications

• Heating and stirring
• 7 x 7 in / 18 x 18 cm ceramic top
• Ambient +5°C to 550°C
• 50 to 1,800 rpm
• 20 L H₂O stirring capacity
• 1,582 W heating power at 120 V
• 120 V OHAUS item number: 30541631
• K1 120 V kit item number: 30981778

OHAUS Guardian 5000 e-G52HSRDA

The e-G52HSRDA combines a compact 5.3 in / 13.5 cm round ceramic-coated aluminum plate with heating and magnetic stirring.

With a temperature range to 360°C, stirring up to 1,800 rpm, and capacity up to 20 L, it is a practical choice when bench space is limited or a smaller round top better matches the vessel being used.

e-G52HSRDA Key Specifications

• Heating and stirring
• 5.3 in / 13.5 cm diameter top
• Ceramic-coated aluminum plate
• Ambient +5°C to 360°C
• 50 to 1,800 rpm
• 20 L H₂O stirring capacity
• 600 W heating power at 120 V
• 120 V OHAUS item number: 30541629
• K1 120 V kit item number: 30981776

OHAUS Guardian 5000 e-G52HS10C

The e-G52HS10C is the largest Guardian 5000 hotplate stirrer, providing a 10 x 10 in / 26 x 26 cm ceramic top plate and up to 22 L stirring capacity.

It is intended for applications requiring a larger vessel footprint, greater working area, or higher liquid volume while retaining digital temperature and stirring control.

e-G52HS10C Key Specifications

• Heating and stirring
• 10 x 10 in / 26 x 26 cm ceramic top
• Ambient +5°C to 500°C
• 50 to 1,800 rpm
• 22 L H₂O stirring capacity
• 1,650 W heating power at 120 V
• 120 V OHAUS item number: 30541637
• K1 120 V kit item number: 30981782

OHAUS Guardian 5000 e-G52HP07C Hotplate

The e-G52HP07C is the heating-only model in the Guardian 5000 family. It uses the same 7 x 7 in ceramic top and reaches up to 550°C, but does not include magnetic stirring.

This is the appropriate Guardian 5000 configuration when the application requires controlled heating but samples are mixed manually, mechanically, or do not require stirring.

e-G52HP07C Key Specifications

• Heating only
• 7 x 7 in / 18 x 18 cm ceramic top
• Ambient +5°C to 550°C
• 1,582 W heating power at 120 V
• 120 V OHAUS item number: 30541633
• K1 120 V kit item number: 30981780

OHAUS Guardian 5000 e-G52ST07C Magnetic Stirrer

The e-G52ST07C is the stirring-only version of the Guardian 5000 platform. It provides magnetic stirring from 50 to 1,800 rpm with capacity up to 20 L of water.

Choose this model when controlled magnetic stirring is required but heating is unnecessary or is supplied by another part of the process.

e-G52ST07C Key Specifications

• Magnetic stirring only
• 7 x 7 in / 18 x 18 cm ceramic top
• 50 to 1,800 rpm
• 20 L H₂O stirring capacity
• 120 V OHAUS item number: 30541635

What Is Included with a Guardian 5000 K1 Kit?

Guardian 5000 K1 models include the same hotplate or hotplate-stirrer as the standard version plus the following OHAUS accessories:

• 30500590: PT1000(A) stainless-steel temperature probe, -40°C to 400°C, 20 cm
• 30973298: Probe Holder Kit

The probe allows compatible heating models to control based on the actual sample temperature rather than relying only on top-plate temperature.

Shared Guardian 5000 Features

• Digital LCD interface: Large bright white-character display provides clear temperature, speed, status, and operating information.
• SafetyHeat™: OHAUS safety monitoring is designed to stop heating if an over-temperature condition is detected.
• SmartHeat™: Allows users to set an upper temperature limit appropriate for the application.
• SmartRate™: Provides selectable heating and stirring rate behaviour for applications requiring gentler or faster response.
• Three heating-rate modes: Heating models provide Standard, Fast, and Soft settings to better match the sample and procedure.
• Hot-top indication: A prominent indicator remains active when the top plate is at or above approximately 40°C.
• Run Dry Protection: When enabled during probe-controlled heating, the instrument can shut heating off if the probe is no longer immersed in the heating medium.
• Time Run mode: Supports timed heating and stirring workflows.
• Temperature calibration: Heating models support multiple plate and probe calibration points.
• RS232 communication: Built-in RS232 supports compatible data-logging and remote-control workflows.
• Optional USB or Ethernet: Interface kits are available when USB or Ethernet connectivity is required.
• Full metal housing: Designed for routine laboratory use with smooth surfaces for easier cleaning.
• IP32 protection: Guardian 5000 models carry an IP32 ingress-protection rating.

Guardian 5000 Specifications

Typical Applications

Application	How Guardian 5000 Helps
Sample & Solution Preparation	Provides controlled heating and/or magnetic stirring for preparing laboratory samples and solutions.
Buffers & Reagents	Supports dissolution and mixing of powders, salts, buffers, and reagents.
Media Preparation	Useful for controlled heating and mixing during routine laboratory media preparation.
Food & Beverage QA/QC	Suitable for routine sample preparation, dissolution, formulation, and quality-control laboratory workflows.
Environmental & Wastewater Labs	Supports reagent preparation, sample conditioning, wet chemistry, and other routine laboratory procedures.
Research & Education	Digital control and multiple plate configurations make the series suitable for research and instructional laboratories.
Industrial QA/QC	Useful for formulation, material preparation, process-development, and routine quality testing.

Connectivity & Accessories

Guardian 5000 models include RS232 communication for compatible data-logging and remote-control applications.

• 30304101: RS232-to-USB Interface Kit
• 30304102: RS232-to-Ethernet Interface Kit
• 30500590: PT1000(A) stainless-steel temperature probe
• 30973298: Probe Holder Kit
• Optional splash shields
• PTFE stir bars and stir-bar retrievers
• Additional PT100/PT1000 probe configurations

Important Run Dry Protection Note

Run Dry Protection is intended for probe-controlled heating. When enabled, the Guardian 5000 can stop heating and generate an alarm if the probe is no longer immersed in the heating medium or if liquid level drops during evaporation.

Run Dry Protection is disabled by default and must be enabled through the instrument menu when required. Always follow the OHAUS operating manual and your laboratory's safety procedures.

Canadian Purchasing Support

Cambridge Environmental Products supplies OHAUS Guardian 5000 hotplates and stirrers in Canada with CAD pricing and support for research, education, food and beverage, environmental, industrial QA/QC, and general laboratory customers.

We can help confirm the correct plate size, heating requirement, stirring capacity, voltage, temperature probe, and accessories before you order.

Common Questions About the OHAUS Guardian 5000

What is the difference between the Guardian 5000 models?

The models differ mainly by function, plate size, plate material, maximum temperature, and stirring capacity. The series includes three hotplate stirrers, one heating-only hotplate, and one stirring-only model.

Which Guardian 5000 is the best general-purpose hotplate stirrer?

The e-G52HS07C is the most versatile general-purpose configuration, combining a 7 x 7 in ceramic top, temperatures up to 550°C, speeds up to 1,800 rpm, and 20 L stirring capacity.

Which Guardian 5000 has the largest plate?

The e-G52HS10C has a 10 x 10 in / 26 x 26 cm ceramic plate and provides up to 22 L stirring capacity.

Which model reaches the highest temperature?

The e-G52HS07C hotplate stirrer and e-G52HP07C hotplate reach up to 550°C.

What is included with a K1 model?

K1 models include OHAUS temperature probe 30500590 and probe-holder kit 30973298 in addition to the applicable Guardian 5000 instrument.

Do I need the K1 kit?

Choose the K1 version if you need direct sample-temperature monitoring and control using an immersed temperature probe. If plate-temperature control is sufficient for your application, the standard configuration may be appropriate.

Can Guardian 5000 connect to a computer?

Yes. Guardian 5000 models include RS232 communication. Optional RS232-to-USB and RS232-to-Ethernet interface kits are available for compatible data-logging or remote-control workflows.

Can I use the Guardian 5000 for food and beverage QA/QC?

Yes. The series can be used for routine laboratory workflows such as sample preparation, reagent dissolution, formulation, heating, and mixing in food and beverage quality-control laboratories.

Where can I buy OHAUS Guardian 5000 hotplate stirrers in Canada?

Cambridge Environmental Products supplies OHAUS Guardian 5000 hotplates, stirrers, hotplate stirrers, K1 kits, probes, and related accessories in Canada with CAD pricing and Canadian purchasing support.