42
* Plate Control: Below 100°C ±2°C. Environmental and sample conditions permitting.
Probe Control: Below 100°C ±1°C. Environmental and sample conditions permitting.
** Below 100°C ±2°C. Environmental and sample conditions permitting.
*** Below 100°C ±1°C. Environmental and sample conditions permitting.
How to Select a Hotplate/Stirrer
Review the following points to help you select the appropriate hotplate/stirrer for your unique application.
1. Control types:
The
Basic Mini
series offers an open loop speed control and a mechanical
thermostat that is not designed for exact regulation over speed or temperature.
When precision is not needed these units offer an economical and reliable
alternative.
The
Advanced
series is more accurate and offers a closed loop PID
microprocessor for both temperature and speed which automatically
stabilizes the top plate for temperature and or stirring speeds by
regulating for variations in the system with regards to the original set-point.
Utilizing electronic user feedback, it offers the most optimal measure for
temperature control by providing greater accuracy and ease-in-use for
reproducing your results. Overshoot protection protects your sample by
shutting down if the temperature exceeds the set-point by more than 10°C.
The
Professional
series also offers a closed loop PID microprocessor for both
temperature and speed control, but additionally offers electronic feedback for
control of both temperature and speed. These units offer the best in accuracy
and precision. A built-in timer allows for greater independence. Also included
with the Professional series Hotplates and Hotplate-Stirrers is an external
stainless steel temperature probe. It guarantees the utmost in sample
temperature monitoring and control, delivering ±1% temperature stability
and is supplied with a 18” stainless steel support rod, hook connector and a
thermometer/temperature probe extension clamp.
VWR
®
Hotplate/Stirrer Selection Guide
VWR
®
HOTPLATES/STIRRERS
Model
Hotplates, Stirrers
& Hotplate-Stirrers
Professional
Hotplates, Stirrers
& Hotplate-Stirrers
Advanced
Hotplates, Stirrers
& Hotplate-Stirrers
Standard
Round Top
Hotplate-Stirrers
Professional
Round Top
Hotplate-Stirrers
Advanced
Top Plate Dimensions (L x W)
7 x 7”, 10 x 10”
4 x 4”, 7 x 7”, 10 x 10”
4 x 4”, 7 x 7”, 10 x 10”
5.3” Diameter
5.3” Diameter
Overall Dimensions (L x W x H)
See Page 46
See Page 48
See Page 48
14.8 x 9.9 x 4.3”
(37.6 x 25.1 x 10.9cm)
14.8 x 9.9 x 4.3”
(37.6 x 25.1 x 10.9cm)
Temperature Range
Ceramic
Aluminum
Stainless Steel
Ambient +5° to 500°C
Ambient +5° to 400°C
N/A
Ambient +5° to 500°C
Ambient +5° to 400°C
N/A
Ambient +5° to 500°C
Ambient +5° to 400°C
N/A
N/A
N/A
Ambient +5° to 400°C
N/A
N/A
Ambient +5° to 400°C
Temperature Stability
Ceramic
Aluminum
± 1%*
± 1%*
± 3%**
± 2%**
± 3%**
± 2%**
N/A
± 1%***
N/A
± 3%**
Speed Range
60 to 1600rpm
60 to 1600rpm
60 to 1600rpm
60 to 1600pm
60 to 1600rpm
Speed Stability
± 2%
± 2%
± 2%
± 2%
± 2%
Timer (Digital Models)
1 second to 160 hours
N/A
N/A
1 second to 160 hours
N/A
Maximum Capacity (H
2
O)
2500mL, 6000mL
600mL, 2500mL, 6000mL 600mL, 2500mL, 6000mL
1500mL
1500mL
Ship Weight
See Page 46
See Page 48
See Page 48
11.7lbs (5.3kg)
9.4lbs (4.3kg)
