Skip to main content
v2026.11,610 entries · CC-BY 4.0

Ask a research-administration question

Answers are drawn from CASRAI and the rest of the CASRAI corpus, with a link to every source.

Answers are AI-generated from CASRAI’s own published pages and can be wrong, so check the linked sources before relying on one; your question is logged without personal data — never sold, never used to train a third-party model — to show us what CASRAI is missing, so please do not type personal or confidential details. How we use this

CASRAI is the reference for research administration — bookmark it for the next question.

Ohaus Guardian™ 3000 Hotplate-Stirrer, e-G31HS07C, 115V, 7" x 7" Ceramic Plate, 15L Capacity

Ohaus

Ohaus Guardian™ 3000 Hotplate-Stirrer, e-G31HS07C, 115V, 7" x 7" Ceramic Plate, 15L Capacity

in Hot Plates & Stirrers

$624.00 - $770.00

In stock

Price varies by Option.

Ohaus Guardian 3000 hotplate-stirrer with a 7 in × 7 in ceramic plate and 15 L capacity, on 115 V, with SafetyHeat protection and a backlit LCD.

Option

Choose Option to continue.

Buying through procurement?

Generate a formal quotation for 1 × this item, plus our W-9 — everything your finance department needs to raise a purchase order.

Choose Option to continue.

Description

Affordable digital hotplate-stirrer engineered for safety, rapid heating, and powerful mixing. The Guardian™ 3000 features SafetyHeat™ early-detection protection, a rugged spill-resistant metal housing, and a smooth, chemical-resistant ceramic top for fast cleanups.
Backlit LCD shows temperature and speed at a glance, with clear hot-top and heating/stirring indicators. Use the optional temperature probe for precise sample control. Ideal for boiling liquids, water/oil baths, media prep, dissolving buffers and reagents, and general lab workflows.
Digital Control 7" × 7" Ceramic Plate Up to 500 °C 80–1600 rpm SafetyHeat™ 15 L Capacity Backlit LCD
Industry-leading safety. SafetyHeat™ uses dual independent controls to monitor electronics and stop heating before overheating occurs.
Built to last. Durable metal housing with spill-resistant design and a smooth, chemical-resistant ceramic top for easy cleaning.
Precise & versatile. Digital control with probe-ready operation, 80–1600 rpm stirring, and up to 500 °C heating (ceramic plate).
Data Sheet
Why this OHAUS Guardian™ 3000?

Safety first — SafetyHeat™ early detection with dual independent controls helps prevent overheating.
Rugged, cleanable design — metal housing and smooth ceramic top resist spills and chemicals.
Backlit LCD — easy-to-read temperature & speed with hot-top and heating/stirring indicators.
Probe-ready accuracy — optional temperature probe for precise sample control and single-point calibration.
Everyday lab workhorse — 15 L capacity, 80–1600 rpm, +5 °C to 500 °C heating range (ceramic plate).
Technical Specifications
Model
e-G31HS07C (Guardian™ 3000, 7" x 7" Ceramic)
Item Number
30680267
Function
Heating and Stirring
Capacity
15 L
Plate Construction
Ceramic
Plate Size
7 in × 7 in (178 mm × 178 mm)
Temperature Range
Ambient +5 °C – 500 °C (ceramic plate)
Control
Digital (Back-lit LCD)
Power Consumption
1,050 W
Speed Range
80 – 1600 rpm
Dimensions (L × H × W)
12.5 in × 4.4 in × 8.8 in (318 × 112 × 223 mm)
Working Environment
5 °C – 40 °C, 80% RH, non-condensing (41 °F – 104 °F)
Net Weight
8.6 lb (3.9 kg)
Safety Certification
TUV
Temperature Stability
±3% (plate), below 100 °C ±2 °C; with probe ±2%/±2 °C
Temperature Probe
Available as an accessory
Calibration
Single-point: 1 plate / 1 probe
Power Input
100–120 V~ 10 A, 50/60 Hz
Display Indicators
Heating, stirring (green LEDs); hot-top indicator; probe-in-use; single-point calibration
Applications
Boiling liquids, water/oil bath prep, sample/media prep, dissolving buffers/reagents, concentrating
Construction & Features
Metal housing; PET front panel; control knobs; heater disconnect switch; support-rod holder
Family
OHAUS Guardian™ 3000 Hotplates & Stirrers
General Lab Chemical Sciences Pharmaceutical Academic & Research
FAQ

What makes SafetyHeat™ different?

SafetyHeat™ uses two independent safety controls to monitor the electronics and proactively cut heating if abnormal conditions are detected, reducing risk of overheating.
What is the heating and stirring performance?

Heating range is ambient +5 °C up to 500 °C on the 7" ceramic plate, with a stirring range of 80–1600 rpm and a working capacity up to 15 L.
Can I use a temperature probe for closed-loop control?

Yes. An optional probe connects directly to the unit for precise sample temperature control and single-point calibration.
Is the top plate chemical resistant?

The smooth ceramic surface is highly chemical-resistant and easy to clean—ideal for routine lab use.
What certifications does it have?

The e-G31HS07C carries TUV safety certification and is designed for 5–40 °C, 80% RH, non-condensing environments.

Specifications
Model#:
30680267 | 30983672
Top Plate Size:
7×7 in.
Capacity:
15 L
Power:
120V

Frequently asked questions

What is the plate size and stirring capacity?+

A 7 in × 7 in chemical-resistant ceramic top with a 15 L stirring capacity.

What safety features are fitted?+

Ohaus list SafetyHeat early-detection protection and a rugged spill-resistant metal housing.

What purchase options are there?+

Hotplate stirrer only, or hotplate with temperature probe.

What is the model number?+

e-G31HS07C.

Related products

Referenced across the research world

University of Cambridge logoColumbia University logoCrossref logoUniversity of Edinburgh logoHarvard University logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logoORCID logoUniversity of Cambridge logoColumbia University logoCrossref logoUniversity of Edinburgh logoHarvard University logoUniversity of Oxford logoPrinceton University logoStanford School of Medicine logoUniversity College London logoORCID logo
  • University of Cambridge logo
  • Columbia University logo
  • Crossref logo
  • University of Edinburgh logo
  • Harvard University logo
  • University of Oxford logo
  • Princeton University logo
  • Stanford School of Medicine logo
  • University College London logo
  • ORCID logo

View CASRAI adoption →